www.gusucode.com > 高端教育培训门户+论坛网站源码程序 > 整站安装/整站源码/source/class/helper/helper_util.php
<?php /** * [Discuz!] (C)2001-2099 Comsenz Inc. * This is NOT a freeware, use is subject to license terms * * $Id: helper_util.php 29887 2012-05-02 07:36:50Z liulanbo $ */ if(!defined('IN_DISCUZ')) { exit('Access Denied'); } class helper_util { public static function compute($v1, $v2, $glue = '+') { switch ($glue) { case '+': return $v1 + $v2; break; case '-': return $v1 - $v2; break; case '.': return $v1 . $v2; break; case '=': case '==': return $v1 == $v2; break; case 'merge': return array_merge((array)$v1, (array)$v2); break; case '===': return $v1 === $v2; break; case '!==': return $v1 === $v2; break; case '&&': return $v1 && $v2; break; case '||': return $v1 && $v2; break; case 'and': return $v1 and $v2; break; case 'xor': return $v1 xor $v2; break; case '|': return $v1 | $v2; break; case '&': return $v1 & $v2; break; case '^': return $v1 ^ $v2; break; case '>': return $v1 > $v2; break; case '<': return $v1 < $v2; break; case '<>': return $v1 <> $v2; break; case '!=': return $v1 != $v2; break; case '<=': return $v1 <= $v2; break; case '>=': return $v1 >= $v2; break; case '*': return $v1 * $v2; break; case '/': return $v1 / $v2; break; case '%': return $v1 % $v2; break; case 'or': return $v1 or $v2; break; case '<<': return $v1 << $v2; break; case '>>': return $v1 >> $v2; break; default: return null; } } public static function single_compute($v, $glue = '+') { switch ($glue) { case '!': return ! $v; break; case '-': return - $v; break; case '~': return ~ $v; break; default: return null; break; } } public static function check_glue($glue = '=') { return in_array($glue, array('=', '<', '<=', '>', '>=', '!=', '+', '-', '|', '&', '<>')) ? $glue : '='; } } ?>