php常用正则表达式，验证用户名，密码，Email，Url等

<?php
class Verify{   
/**
 * 验证用户名
 * @param string $value
 * @param int $length
 * @return boolean
 */
    public static function isNames($value, $minLen=2, $maxLen=20, $charset='ALL'){
        if(empty($value))
            return false;
        switch($charset){
            case 'EN': $match = '/^[_\w\d]{'.$minLen.','.$maxLen.'}$/iu';
                break;
            case 'CN':$match = '/^[_\x{4e00}-\x{9fa5}\d]{'.$minLen.','.$maxLen.'}$/iu';
                break;
            default:$match = '/^[_\w\d\x{4e00}-\x{9fa5}]{'.$minLen.','.$maxLen.'}$/iu';
        }
        return preg_match($match,$value);
    }

    /**
     * 验证密码
     * @param string $value
     * @param int $length
     * @return boolean
     */
    public static function isPWD($value,$minLen=5,$maxLen=16){
        $match='/^[\\[email protected]#$%^&*()-_=+|{}\[\],.?\/:;\'\"\d\w]{'.$minLen.','.$maxLen.'}$/';
        $v = trim($value);
        if(empty($v)) 
            return false;
        return preg_match($match,$v);
    }

    /**
     * 验证eamil
     * @param string $value
     * @param int $length
     * @return boolean
     */
    public static function isEmail($value,$match='/^[\w\d]+[\w\d-.]*@[\w\d-.]+\.[\w\d]{2,10}$/i'){
        $v = trim($value);
        if(empty($v)) 
            return false;
        return preg_match($match,$v);
    }

    /**
     * 验证电话号码
     * @param string $value
     * @return boolean
     */
    public static function isTelephone($value,$match='/^0[0-9]{2,3}[-]?\d{7,8}$/'){
        $v = trim($value);
        if(empty($v)) 
            return false;
        return preg_match($match,$v);
    }

    /**
     * 验证手机
     * @param string $value
     * @param string $match
     * @return boolean
     */
    public static function isMobile($value,$match='/^[(86)|0]?(13\d{9})|(15\d{9})|(18\d{9})$/'){
        $v = trim($value);
        if(empty($v)) 
            return false;
        return preg_match($match,$v);
    }
    /**
     * 验证邮政编码
     * @param string $value
     * @param string $match
     * @return boolean
     */
    public static function isPostcode($value,$match='/\d{6}/'){
        $v = trim($value);
        if(empty($v)) 
            return false;
        return preg_match($match,$v);
    }
    /**
     * 验证IP
     * @param string $value
     * @param string $match
     * @return boolean
     */
    public static function isIP($value,$match='/^(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])$/'){
        $v = trim($value);
        if(empty($v))
            return false;
        return preg_match($match,$v);
    }

    /**
     * 验证身份证号码
     * @param string $value
     * @param string $match
     * @return boolean
     */
    public static function isIDcard($value,$match='/^\d{6}((1[89])|(2\d))\d{2}((0\d)|(1[0-2]))((3[01])|([0-2]\d))\d{3}(\d|X)$/i'){
        $v = trim($value);
        if(empty($v)) 
            return false;
        else if(strlen($v)>18) 
            return false;
        return preg_match($match,$v);
    }

    /**
     * *
     * 验证URL
     * @param string $value
     * @param string $match
     * @return boolean
     */
    public static function isURL($value,$match='/^(http:\/\/)?(https:\/\/)?([\w\d-]+\.)+[\w-]+(\/[\d\w-.\/?%&=]*)?$/'){
        $v = strtolower(trim($value));
        if(empty($v)) 
            return false;
        return preg_match($match,$v);   
    }
}
?>