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<?php |
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|
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/** |
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* This file contains some core functions extending php. |
5 |
* |
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* @author Andreas Motl <andreas.motl@ilo.de> |
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* @package org.netfrag.glib |
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* @name php |
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* |
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*/ |
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|
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/** |
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* $Id: extensions.php,v 1.2 2003/04/06 01:37:31 jonen Exp $ |
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* |
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* $Log: extensions.php,v $ |
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* Revision 1.2 2003/04/06 01:37:31 jonen |
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* + added functions to generate and handle unique ID's |
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* |
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* Revision 1.1 2003/04/05 19:53:45 joko |
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* moved here from ../ |
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* |
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* Revision 1.7 2003/04/04 17:35:40 joko |
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* fixed php croaking |
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* moved error handling function to 'php_errors.php' |
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* + function php::maintenance |
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* |
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* Revision 1.6 2003/03/11 02:14:18 joko |
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* + fixed metadata for phpDocumentor |
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* |
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* Revision 1.5 2003/03/10 22:58:46 joko |
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* + fixed metadata for phpDocumentor |
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* |
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* Revision 1.4 2003/03/05 23:16:46 joko |
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* updated docu - phpDocumentor is very strict about its 'blocks'... |
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* |
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* Revision 1.3 2003/03/05 18:54:41 joko |
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* updated docu - phpDocumentor is very strict about its 'blocks'... |
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* |
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* Revision 1.2 2003/03/05 11:58:49 joko |
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* modified is_hash, mkInstance and others |
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* |
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* Revision 1.1 2003/03/03 21:08:21 joko |
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* refactored from flib/utils |
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* |
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* |
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*/ |
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|
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|
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/** |
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* --- shortcut functions |
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* Is there a mechanism in php to 'export' these methods |
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* to the global symbol table automagically? |
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* We wouldn't require declaring these shortcuts below and |
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* could also do some nice stuff at runtime. |
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* (maybe resembling CPAN's Exporter) |
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* |
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* Okay, 'eval' and 'create_function' are alternatives, but i'm |
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* still looking for something that would let us manipulate the |
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* symbol table.... (would also be a nice-to-have feature for |
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* mungling "other" symbol table entries, like variables |
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* and/or object references etc.) |
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* |
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* TODO: $php::EXPORT_OK = array('Dumper', 'session_register_safe', 'mkObject', 'is_hash', 'merge_to'); |
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* |
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*/ |
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// this is (and will probably always be) required by the "Exporter" |
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function &Dumper() { |
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$args = func_get_args(); |
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// shrink array to single item? |
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//if (sizeof($args) == 1) { $args = $args[0]; } |
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php::array_shrink($args); |
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return php::Dumper($args); |
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} |
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|
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// these could be refactore using Exporter proposal below, |
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// which just does this code at runtime via eval |
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//function &session_register_safe() { return php::session_register_safe(func_get_args()); } |
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//function &is_hash() { return php::is_hash(func_get_args()); } |
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//function &loadModule() { return php::loadModule(func_get_args()); } |
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//function &mkObject() { return php::mkInstance(func_get_args()); } |
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|
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|
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//exit; |
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|
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// yes! |
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php::export_symbols(); |
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|
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|
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|
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/** |
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* --- php extension functions living in the php:: namespace |
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* |
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* <pre> |
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* x php::Dumper |
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* x php::session_register_safe |
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* x php::array_init |
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* x php::is_hash |
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* x php::array_join_merge |
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* o php::merge |
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* o php::merge_to |
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* x php::loadModule |
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* x php::mkInstance |
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* </pre> |
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* |
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* @author Andreas Motl <andreas.motl@ilo.de> |
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* @copyright (c) 2003 - All Rights reserved. |
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* @license GNU LGPL (GNU Lesser General Public License) |
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* |
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* @link http://www.netfrag.org/~joko/ |
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* @link http://www.gnu.org/licenses/lgpl.txt |
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* |
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* @package org.netfrag.glib |
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* @name php |
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* |
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* <pre> |
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* Todo: |
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* @todo (o) establish mkInstance here (move from DesignPattern::Object::mkObject) |
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* @todo (o) establish loadModule here (move from DesignPattern::Object::loadModule) |
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* |
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* Ideas: |
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* @todo (o) php::create_redirector_function('func', array( type => 'lamba|function|method', name => 'Abc::do_xyz') ) |
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* @todo (o) php::create_redirector_method('class|obj_ref', 'method', $target) |
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* @todo (o) php::export_symbol(from, to) (maybe solves above two) |
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* </pre> |
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* |
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*/ |
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class php { |
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|
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|
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// Exporter proposal |
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|
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// does (e.g.) Exporter::export_symbol('php', 'loadModule', array( php_function => 'loadModule' )); |
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// (or) Exporter::export_symbol('php', 'mkInstance', array( php_function => 'mkObject' )); |
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// -> just all from EXPORT_OK |
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|
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function export_symbols() { |
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|
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$symbols = func_get_args(); |
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php::array_shrink($symbols); |
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|
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global $PHP_EXTENSIONS_EXPORT; |
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//print Dumper($PHP_EXTENSIONS_EXPORT); |
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//exit; |
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|
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if (is_array($PHP_EXTENSIONS_EXPORT)) { |
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//if (defined('EXPORT_OK')) { |
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//print EXPORT_OK . "<br/>"; |
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//$symbols = split(' ', EXPORT_OK); |
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//foreach ($php->EXPORT_OK as $symbol) { |
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/* |
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foreach (EXPORT_OK as $symbol) { |
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print "exporting: $symbol<br/>"; |
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Exporter::export_symbol('php', $symbol, array( php_function => $symbol )); |
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} |
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*/ |
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|
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$symbols = php::array_join_merge($PHP_EXTENSIONS_EXPORT, $symbols); |
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|
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php::loadModule('Exporter'); |
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if (class_exists('Exporter')) { |
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Exporter::export_symbols('php', $symbols); |
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} |
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|
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} |
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|
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} |
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|
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function Dumper() { |
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$arg_list = func_get_args(); |
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$count = 1; |
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|
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// build dump by catching output of php's 'print_r' |
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// using php's output buffering functions |
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ob_start(); |
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foreach ($arg_list as $arg) { |
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print_r($arg); |
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if (is_string($arg)) { |
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print "\n"; |
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} |
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$count++; |
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} |
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$var_dump = ob_get_contents(); |
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ob_end_clean(); |
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|
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//print "mode: " . $this->Dumper_mode . "<br/>"; |
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//if ($this->Dumper_mode == HTML) { |
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$var_dump = str_replace("\n", '<br/>', $var_dump); |
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$var_dump = str_replace(" ", ' ', $var_dump); |
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//} |
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|
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//if (sizeof($args) == 1) { $var_dump .= '<br/>'; } |
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|
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return $var_dump; |
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} |
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|
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function session_register_safe($varname) { |
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if (!session_is_registered($varname)) { |
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session_register($varname); |
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return 1; |
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} |
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} |
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|
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// ------------------------------------------------- |
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// array initializer |
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// initializes passed variable (taken by reference) with an empty array |
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// does this only if it doesn't exist yet or initialization is explicitely requested ($clear = 1) |
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function array_init(&$var, $clear = 0) { |
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if (!is_array($var) || $clear) { $var = array(); } |
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} |
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|
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// from: php.net - http://www.php.net/manual/en/function.array-merge-recursive.php |
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function is_hash( $var = null ) { |
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if( is_array( $var ) ) { |
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$keys = array_keys( $var ); |
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$all_num = true; |
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for( $i=0; $i<count($keys); $i++ ) |
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if( is_string($keys[$i] ) ) return true; |
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} |
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return false; |
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} |
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|
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// from: php.net - http://www.php.net/manual/en/function.array-merge-recursive.php |
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function array_join_merge( $arr1, $arr2 ) { |
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if( is_array( $arr1 ) and is_array( $arr2 ) ) { |
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// the same -> merge |
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$new_array = array(); |
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|
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if( php::is_hash( $arr1 ) and php::is_hash( $arr2 ) ) { |
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// hashes -> merge based on keys |
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$keys = array_merge( array_keys( $arr1 ), array_keys( $arr2 ) ); |
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foreach( $keys as $key ) { |
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$new_array[$key] = php::array_join_merge( $arr1[$key], $arr2[$key] ); |
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} |
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} else { |
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// two real arrays -> merge |
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$new_array = |
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array_reverse(array_unique(array_reverse(array_merge($arr1,$arr2)))); |
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} |
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|
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return $new_array; |
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} else { |
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// not the same ... take new one if defined, else the old one stays |
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return $arr2 ? $arr2 : $arr1; |
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} |
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} |
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|
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|
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// TODO: |
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// o refactor to the php:: namespace? |
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// o PEAR::??? |
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// x rename mkObject to mkInstance |
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// x rename loadModule? let it like is.... (suggestions? loadPackage?) |
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// o enhance loadModule: make it possible to load packages from anywhere?! #?)&%$ |
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|
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function namespace2filename($nsName) { |
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if ($filename = str_replace('::', '/', $nsName)) { |
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return $filename; |
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} |
259 |
} |
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|
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function loadModule($namespacedClassname, $options = null) { |
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|
263 |
if (DEBUG_PHP_EXTENSIONS == 1) { |
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print "php::loadModule: " . Dumper($namespacedClassname); |
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} |
266 |
if (LOG_PHP_EXTENSIONS == 1) { |
267 |
php::append_log( "php::loadModule( $namespacedClassname )" ); |
268 |
} |
269 |
|
270 |
if ($filename = php::namespace2filename($namespacedClassname)) { |
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|
272 |
if (is_array($options)) { |
273 |
$extension = $options[extension]; |
274 |
} elseif ($options) { |
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$extension = $options; |
276 |
} else { |
277 |
$extension = 'php'; |
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} |
279 |
|
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$filename .= ".$extension"; |
281 |
|
282 |
// V1: just require |
283 |
//require_once($filename); |
284 |
|
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// V2: check file for existance (didn't work!!! problem with path-style conversion regarding platform running on?) |
286 |
/* |
287 |
if (file_exists($filename)) { |
288 |
require_once($filename); |
289 |
} else { |
290 |
//user_error("Could not load module '$namespacedClassname', file '$filename' does not exist."); |
291 |
} |
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*/ |
293 |
|
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// V3: wrapped through eval (weird) |
295 |
/* |
296 |
$evalstring = "return include_once('$filename');"; |
297 |
$result = eval($evalstring); |
298 |
if (!$result) { |
299 |
user_error("DesignPattern::Object: Could not load module '$namespacedClassname', file '$filename' does not exist."); |
300 |
return; |
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} |
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*/ |
303 |
|
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// V4: just include |
305 |
//define ("WARNING", E_USER_NOTICE); |
306 |
//error_reporting(E_USER_WARNING); |
307 |
//error_reporting(E_ALL); |
308 |
//error_reporting(E_CORE_ERROR); |
309 |
//set_error_handler(array('php::error_handler_2')); |
310 |
|
311 |
//set_error_handler('php_error_handler'); |
312 |
// TODO: do stack-backtracing here to determine function called two or three levels before!!! |
313 |
//print "file: $filename<br/>"; |
314 |
|
315 |
if (!include_once($filename)) { |
316 |
//if (!@include_once($filename)) { |
317 |
$msg = "php::loadModule error: Could not load module '$namespacedClassname', file '$filename' does not exist."; |
318 |
user_error($msg); |
319 |
php::append_log($msg, PEAR_LOG_ERR); |
320 |
//trigger_error($msg); |
321 |
//print "msg: $msg<br/>"; |
322 |
return; |
323 |
} |
324 |
//restore_error_handler(); |
325 |
|
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//exit; |
327 |
|
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return 1; |
329 |
} |
330 |
} |
331 |
|
332 |
|
333 |
function &mkComponent() { |
334 |
|
335 |
// argument handling - perl style |
336 |
$arg_list = &func_get_args(); |
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|
338 |
// trace |
339 |
//print "php::mkInstance: " . Dumper($arg_list); |
340 |
//exit; |
341 |
|
342 |
// patch arglist if all arguments are passed in as a single array |
343 |
if (sizeof($arg_list) == 1 && is_array($arg_list[0])) { |
344 |
$arg_list = &$arg_list[0]; |
345 |
} |
346 |
|
347 |
//print "arg_list: $arg_list<br/>"; |
348 |
$namespacedClassname = array_shift($arg_list); |
349 |
|
350 |
// debug |
351 |
if (DEBUG_PHP_EXTENSIONS == 1) { |
352 |
print "php::mkComponent: $namespacedClassname<br/>"; |
353 |
} |
354 |
if (LOG_PHP_EXTENSIONS == 1) { |
355 |
php::append_log( "php::mkComponent( $namespacedClassname )" ); |
356 |
} |
357 |
|
358 |
$classname = $namespacedClassname; |
359 |
$filename = $namespacedClassname; |
360 |
$load_module_options = null; |
361 |
|
362 |
if (strstr($namespacedClassname, '_')) { |
363 |
//print "mkObject: unallowed character in namespaced classname: '_' ($namespacedClassname)<br/>"; |
364 |
//return; |
365 |
} |
366 |
|
367 |
if (strstr($namespacedClassname, '.')) { |
368 |
//print "mkObject: unallowed character in namespaced classname: '_' ($namespacedClassname)<br/>"; |
369 |
//return; |
370 |
$parts = split('\.', $namespacedClassname); |
371 |
$filename = $parts[0]; |
372 |
$extension = $parts[sizeof($parts) - 1]; |
373 |
$load_module_options = array( extension => $extension ); |
374 |
} |
375 |
|
376 |
|
377 |
// trace |
378 |
//print "mkObject: $classname<br/>"; |
379 |
//print "file: $filename<br/>"; |
380 |
|
381 |
// build native class name from namespaced one |
382 |
$classname = str_replace('::', '_', $classname); |
383 |
$classname = str_replace('/', '_', $classname); |
384 |
|
385 |
// load class-file |
386 |
if (!class_exists($classname)) { |
387 |
php::loadModule($filename, $load_module_options); |
388 |
} |
389 |
|
390 |
// instantiate object |
391 |
$attributes = $arg_list; |
392 |
// V0: |
393 |
//$obj = new $classname($attributes); |
394 |
// V1: |
395 |
//$obj = new DesignPattern_Bridge($classname, $attributes); |
396 |
// V2: |
397 |
$obj = php::mkInstance($classname, $attributes); |
398 |
|
399 |
// constructor autocall - if possible |
400 |
// FIXME: take care for side-effects!!! |
401 |
/* |
402 |
if (method_exists($obj, 'constructor')) { |
403 |
$obj->constructor(); |
404 |
} |
405 |
*/ |
406 |
|
407 |
// return instance |
408 |
return $obj; |
409 |
|
410 |
} |
411 |
|
412 |
// from: http://www.php.net/manual/en/function.method-exists.php |
413 |
function class_has_method($className, $methodName) { |
414 |
$bool_exists = (in_array(strtolower($methodName), get_class_methods($className))); |
415 |
return $bool_exists; |
416 |
} |
417 |
|
418 |
// down: array( item ) => item |
419 |
function &array_shrink(&$array) { |
420 |
// shrink array to single item? yes! |
421 |
if (is_array($array) && !php::is_hash($array) && (sizeof($array) == 1)) { $array = $array[0]; } |
422 |
return $array; |
423 |
} |
424 |
|
425 |
function append_log($message, $level = PEAR_LOG_DEBUG) { |
426 |
static $Class_Logger_loaded; |
427 |
static $Class_Logger_instance; |
428 |
if (!$Class_Logger_loaded) { |
429 |
$Class_Logger_loaded++; |
430 |
//print "LOAD<br/>"; |
431 |
php::loadModule('Class::Logger'); |
432 |
} |
433 |
if (class_exists('Class_Logger')) { |
434 |
//$Class_Logger_instance = new Class_Logger(); |
435 |
$Class_Logger_instance = php::mkComponent('Class::Logger'); |
436 |
//print "YAI<br/>"; |
437 |
//Class_Logger::log($message); |
438 |
$Class_Logger_instance->log($message, $level); |
439 |
} else { |
440 |
// FIXME! pre-logger log-messages (two or three): |
441 |
// [PEAR_LOG_DEBUG] php::loadModule( Class::Logger ) |
442 |
// [PEAR_LOG_DEBUG] php::loadModule( DesignPattern::AbstractClass ) |
443 |
//print "[$level] $message" . "<br/>"; |
444 |
} |
445 |
} |
446 |
|
447 |
function &mkInstance($classname, $attributes = array()) { |
448 |
|
449 |
$oo = is_object($this); |
450 |
|
451 |
// autocall constructor? |
452 |
if ($oo) { |
453 |
//print Dumper($this); |
454 |
//exit; |
455 |
//print "this: $this<br/>"; |
456 |
//print "parent: $parent<br/>"; |
457 |
// V1: |
458 |
//parent::constructor(); |
459 |
// V2: |
460 |
//call_user_func('parent::constructor'); |
461 |
// V3: |
462 |
//call_user_func(array($this, 'constructor')); |
463 |
if (method_exists($this, 'constructor')) { |
464 |
//print "YAI<br/>"; |
465 |
//call_user_func(array($this, 'constructor')); |
466 |
} |
467 |
} |
468 |
|
469 |
if ($oo) { |
470 |
//$this->log( get_class($this) . "->mkInstance( classname $classname )" ); |
471 |
//Class_Logger::log( get_class($this) . "->mkInstance( classname $classname )" ); |
472 |
} else { |
473 |
//php::append_log( "php::mkInstance( classname $classname )" ); |
474 |
} |
475 |
|
476 |
if (isset($attributes)) { |
477 |
//print Dumper($attributes); |
478 |
|
479 |
/* |
480 |
// pass single argument 1:1 |
481 |
if (count($attributes) == 1) { |
482 |
$attributes_merged = $attributes[0]; |
483 |
|
484 |
|
485 |
|
486 |
// pass hash 1:1 |
487 |
} elseif (is_hash($attributes)) { |
488 |
$attributes_merged = $attributes; |
489 |
|
490 |
} else { |
491 |
$attributes_merged = $attributes; |
492 |
} |
493 |
*/ |
494 |
|
495 |
$args_pass = array(); |
496 |
for ($i=0; $i<=count($attributes); $i++) { |
497 |
array_push($args_pass, '&$attributes[' . $i . ']'); |
498 |
} |
499 |
|
500 |
$arg_string = join(', ', $args_pass); |
501 |
|
502 |
/* |
503 |
// merge entries of numerical indexed arrays together into one hash |
504 |
} else { |
505 |
$attributes_merged = array(); |
506 |
foreach ($attributes as $entry) { |
507 |
$attributes_merged = array_merge($attributes_merged, $entry); |
508 |
} |
509 |
} |
510 |
*/ |
511 |
|
512 |
if (!class_exists($classname)) { |
513 |
user_error("Class '$classname' doesn't exist."); |
514 |
return; |
515 |
} |
516 |
|
517 |
//print Dumper($attributes_merged); |
518 |
//print Dumper($attributes); |
519 |
//$instance = new $classname($attributes_merged); |
520 |
//$instance = new $classname($attributes[0]); |
521 |
$evalstr = 'return new $classname(' . $arg_string . ');'; |
522 |
|
523 |
//print "eval: $evalstr<br/>"; |
524 |
|
525 |
$instance = eval($evalstr); |
526 |
//print $evalstr . "<br/>"; |
527 |
} else { |
528 |
$instance = new $classname; |
529 |
} |
530 |
//$this->log("ok"); |
531 |
return $instance; |
532 |
} |
533 |
|
534 |
// up: string -> array |
535 |
function array_cast_safe(&$array_or_not) { |
536 |
if (!is_array($array_or_not)) { |
537 |
$array_or_not = array($array_or_not); |
538 |
//print Dumper($array_or_not); |
539 |
//exit; |
540 |
} |
541 |
} |
542 |
|
543 |
// To return all ancestors class of an object |
544 |
// from: http://www.php.net/manual/en/function.get-parent-class.php |
545 |
function get_ancestors_class($classname) { |
546 |
$father = get_parent_class($classname); |
547 |
if ($father != "") { |
548 |
$ancestors = php::get_ancestors_class($father); |
549 |
$ancestors[] = $father; |
550 |
} |
551 |
return $ancestors; |
552 |
} |
553 |
|
554 |
// ------ override/expand php's 'include_path' setting ------ |
555 |
function add_libpath($paths) { |
556 |
|
557 |
if (!is_array($paths)) { |
558 |
$paths = array($paths); |
559 |
} |
560 |
array_push($paths, ini_get("include_path")); |
561 |
|
562 |
// determine OS |
563 |
$os = 'linux'; |
564 |
if (stristr($_SERVER["SERVER_SOFTWARE"], 'win32')) { |
565 |
$os = 'windows'; |
566 |
} |
567 |
|
568 |
$path_delimiter = ':'; |
569 |
// change path-delimiter for win32 |
570 |
if ($os == 'windows') { $path_delimiter = ';'; } |
571 |
// build new 'include_path'-string |
572 |
$path_new = join($path_delimiter, $paths); |
573 |
ini_set("include_path", $path_new); |
574 |
} |
575 |
|
576 |
// from: http://www.php.net/manual/en/function.is-subclass-of.php |
577 |
function is_subclass($child, $parent) { |
578 |
if (is_string($child)) { |
579 |
do { |
580 |
$child = get_parent_class($child); |
581 |
if (!$child) return false; |
582 |
//} while ($child == $parent); |
583 |
} while ($child != $parent); |
584 |
return true; |
585 |
} else { |
586 |
return is_subclass_of($child, $parent); |
587 |
} |
588 |
} |
589 |
|
590 |
|
591 |
function maintenance($type = 'system', $options = array()) { |
592 |
|
593 |
switch ($type) { |
594 |
|
595 |
case 'system': |
596 |
print "<br/><br/>"; |
597 |
print "<p align=\"center\">We have taken down our systems for maintenance purposes. <br/>Please apologize the downtime.</p>"; |
598 |
print "<p align=\"center\">Wir führen gerade Wartungsarbeiten an unseren Systemen durch. <br/>Bitte entschuldigen Sie die Unterbrechung des Betriebs.</p>"; |
599 |
|
600 |
print "<br/><br/>"; |
601 |
print "<p align=\"center\"><a href=\"mailto:info@top-scores.net\">Top-Scores Ltd.</a></p>"; |
602 |
$do_exit = 1; |
603 |
break; |
604 |
|
605 |
case 'database': |
606 |
print " |
607 |
Database error, we are already notified of this failure and working to resolve it.<br/> |
608 |
We apologize for the inconvenience, please come back later.<br/> |
609 |
<br/> |
610 |
Es ist ein Datenbankfehler aufgetreten. Wir haben bereits Kenntnis von diesem Fehler, an der Lösung des Problems wird gearbeitet.<br/> |
611 |
Bitte versuchen Sie es später nocheinmal.<br/> |
612 |
"; |
613 |
$do_exit = 1; |
614 |
break; |
615 |
|
616 |
case 'rpc': |
617 |
|
618 |
// V0 |
619 |
//return; |
620 |
|
621 |
// V2 |
622 |
// FIXME: implement some more behaviour here! |
623 |
// via constants? |
624 |
// e.g.: |
625 |
if (!constants::get('APP_MODE_DEBUG_LIGHT')) { return; } |
626 |
|
627 |
// V1 |
628 |
print "<font color=\"red\"><b>FIXME! - in 'php::maintenance(rpc)'</b></font><br/>"; |
629 |
print "RPC Problems!<br/>"; |
630 |
print "Status:<br/>"; |
631 |
print Dumper($options[status]); |
632 |
break; |
633 |
|
634 |
} |
635 |
|
636 |
if ($options[no_exit]) { $do_exit = 0; } |
637 |
if ($do_exit) { |
638 |
exit; |
639 |
} |
640 |
|
641 |
} |
642 |
|
643 |
//examples on howto create unique id's |
644 |
// from: http://www.php.net/manual/en/function.uniqid.php |
645 |
function CreateGUID(){ |
646 |
srand((double)microtime()*1000000); |
647 |
$r = rand ; |
648 |
$u = uniqid(getmypid() . $r . (double)microtime()*1000000,1); |
649 |
$m = md5 ($u); |
650 |
return($m); |
651 |
} |
652 |
|
653 |
function CompressID( $ID ){ |
654 |
return(Base64_encode(pack("H*",$ID))); |
655 |
} |
656 |
|
657 |
function ExpandID ($ID){ |
658 |
return ( implode(unpack("H*",Base64_decode($ID)), '') ); |
659 |
} |
660 |
|
661 |
// from: utils/links.php |
662 |
function yesno($bool) { |
663 |
return $bool ? 'yes' : 'no'; |
664 |
} |
665 |
|
666 |
} |
667 |
|
668 |
|
669 |
?> |