179 lines
6.2 KiB
PHP
179 lines
6.2 KiB
PHP
<?php
|
|
// +----------------------------------------------------------------------+
|
|
// | PHP Version 4 |
|
|
// +----------------------------------------------------------------------+
|
|
// | Copyright (c) 1997-2004 The PHP Group |
|
|
// +----------------------------------------------------------------------+
|
|
// | This source file is subject to version 3.0 of the PHP license, |
|
|
// | that is bundled with this package in the file LICENSE, and is |
|
|
// | available at through the world-wide-web at |
|
|
// | http://www.php.net/license/3_0.txt. |
|
|
// | If you did not receive a copy of the PHP license and are unable to |
|
|
// | obtain it through the world-wide-web, please send a note to |
|
|
// | license@php.net so we can mail you a copy immediately. |
|
|
// +----------------------------------------------------------------------+
|
|
// | Authors: Philippe Jausions <Philippe.Jausions@11abacus.com> |
|
|
// | Aidan Lister <aidan@php.net> |
|
|
// +----------------------------------------------------------------------+
|
|
//
|
|
// $Id: version_compare.php,v 1.1 2005/07/11 16:34:36 ggiunta Exp $
|
|
|
|
|
|
/**
|
|
* Replace version_compare()
|
|
*
|
|
* @category PHP
|
|
* @package PHP_Compat
|
|
* @link http://php.net/function.version_compare
|
|
* @author Philippe Jausions <Philippe.Jausions@11abacus.com>
|
|
* @author Aidan Lister <aidan@php.net>
|
|
* @version $Revision: 1.1 $
|
|
* @since PHP 4.1.0
|
|
* @require PHP 4.0.0 (user_error)
|
|
*/
|
|
if (!function_exists('version_compare')) {
|
|
function version_compare($version1, $version2, $operator = '<')
|
|
{
|
|
// Check input
|
|
if (!is_scalar($version1)) {
|
|
user_error('version_compare() expects parameter 1 to be string, ' .
|
|
gettype($version1) . ' given', E_USER_WARNING);
|
|
return;
|
|
}
|
|
|
|
if (!is_scalar($version2)) {
|
|
user_error('version_compare() expects parameter 2 to be string, ' .
|
|
gettype($version2) . ' given', E_USER_WARNING);
|
|
return;
|
|
}
|
|
|
|
if (!is_scalar($operator)) {
|
|
user_error('version_compare() expects parameter 3 to be string, ' .
|
|
gettype($operator) . ' given', E_USER_WARNING);
|
|
return;
|
|
}
|
|
|
|
// Standardise versions
|
|
$v1 = explode('.',
|
|
str_replace('..', '.',
|
|
preg_replace('/([^0-9\.]+)/', '.$1.',
|
|
str_replace(array('-', '_', '+'), '.',
|
|
trim($version1)))));
|
|
|
|
$v2 = explode('.',
|
|
str_replace('..', '.',
|
|
preg_replace('/([^0-9\.]+)/', '.$1.',
|
|
str_replace(array('-', '_', '+'), '.',
|
|
trim($version2)))));
|
|
|
|
// Replace empty entries at the start of the array
|
|
while (empty($v1[0]) && array_shift($v1)) {}
|
|
while (empty($v2[0]) && array_shift($v2)) {}
|
|
|
|
// Release state order
|
|
// '#' stands for any number
|
|
$versions = array(
|
|
'dev' => 0,
|
|
'alpha' => 1,
|
|
'a' => 1,
|
|
'beta' => 2,
|
|
'b' => 2,
|
|
'RC' => 3,
|
|
'#' => 4,
|
|
'p' => 5,
|
|
'pl' => 5);
|
|
|
|
// Loop through each segment in the version string
|
|
$compare = 0;
|
|
for ($i = 0, $x = min(count($v1), count($v2)); $i < $x; $i++) {
|
|
if ($v1[$i] == $v2[$i]) {
|
|
continue;
|
|
}
|
|
$i1 = $v1[$i];
|
|
$i2 = $v2[$i];
|
|
if (is_numeric($i1) && is_numeric($i2)) {
|
|
$compare = ($i1 < $i2) ? -1 : 1;
|
|
break;
|
|
}
|
|
// We use the position of '#' in the versions list
|
|
// for numbers... (so take care of # in original string)
|
|
if ($i1 == '#') {
|
|
$i1 = '';
|
|
} elseif (is_numeric($i1)) {
|
|
$i1 = '#';
|
|
}
|
|
if ($i2 == '#') {
|
|
$i2 = '';
|
|
} elseif (is_numeric($i2)) {
|
|
$i2 = '#';
|
|
}
|
|
if (isset($versions[$i1]) && isset($versions[$i2])) {
|
|
$compare = ($versions[$i1] < $versions[$i2]) ? -1 : 1;
|
|
} elseif (isset($versions[$i1])) {
|
|
$compare = 1;
|
|
} elseif (isset($versions[$i2])) {
|
|
$compare = -1;
|
|
} else {
|
|
$compare = 0;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
// If previous loop didn't find anything, compare the "extra" segments
|
|
if ($compare == 0) {
|
|
if (count($v2) > count($v1)) {
|
|
if (isset($versions[$v2[$i]])) {
|
|
$compare = ($versions[$v2[$i]] < 4) ? 1 : -1;
|
|
} else {
|
|
$compare = -1;
|
|
}
|
|
} elseif (count($v2) < count($v1)) {
|
|
if (isset($versions[$v1[$i]])) {
|
|
$compare = ($versions[$v1[$i]] < 4) ? -1 : 1;
|
|
} else {
|
|
$compare = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Compare the versions
|
|
if (func_num_args() > 2) {
|
|
switch ($operator) {
|
|
case '>':
|
|
case 'gt':
|
|
return (bool) ($compare > 0);
|
|
break;
|
|
case '>=':
|
|
case 'ge':
|
|
return (bool) ($compare >= 0);
|
|
break;
|
|
case '<=':
|
|
case 'le':
|
|
return (bool) ($compare <= 0);
|
|
break;
|
|
case '==':
|
|
case '=':
|
|
case 'eq':
|
|
return (bool) ($compare == 0);
|
|
break;
|
|
case '<>':
|
|
case '!=':
|
|
case 'ne':
|
|
return (bool) ($compare != 0);
|
|
break;
|
|
case '':
|
|
case '<':
|
|
case 'lt':
|
|
return (bool) ($compare < 0);
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
}
|
|
|
|
return $compare;
|
|
}
|
|
}
|
|
|
|
?>
|