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php 安全过滤函数代码

WBOY
Release: 2016-06-06 20:36:56
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php 安全过滤函数代码,防止用户恶意输入内容。

代码如下:
//安全过滤输入[jb]
function check_str($string, $isurl = false)
{
$string = preg_replace('/[\\x00-\\x08\\x0B\\x0C\\x0E-\\x1F]/','',$string);
$string = str_replace(array("\0","%00","\r"),'',$string);
empty($isurl) && $string = preg_replace("/&(?!(#[0-9]+|[a-z]+);)/si",'&',$string);
$string = str_replace(array("%3C",'$string = str_replace(array("%3E",'>'),'>',$string);
$string = str_replace(array('"',"'","\t",' '),array('"',''',' ',' '),$string);
return trim($string);
}
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