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php5.3提示Function ereg() is deprecated Error问题

May 24, 2016 pm 01:00 PM
deprecated error function is

PHP 5.3 ereg() 无法正常使用,提示"Function ereg() is deprecated Error"是因为它长ereg 函数进行了升级处理,需要像preg_match使用/ /来规则了,当然也是php5.3把ereg给费掉的节奏了.

PHP 5.3 ereg() 无法正常使用,提示"Function ereg() is deprecated Error".

问题根源是php中有两种正则表示方法,一个是posix,一个是perl,php6打算废除posix的正则表示方法所以后来就加了个preg_match,此问题解决办法很简单,在ereg前加个过滤提示信息符号即可,把ereg()变成@ereg(),这样屏蔽了提示信息,但根本问题还是没有解决,php在5.2版本以前ereg都使用正常,在5.3以后,就要用preg_match来代替ereg,所以就需要变成这样.

原来:ereg("^[0-9]*$",$page)变成:preg_match("/^[0-9]*$/",$page)

特别提醒:posix与perl的很明显的表达区别就是是否加斜杠,所以与ereg相比,后者在正则的前后分别增加了两个"/"符号,不能缺少.

例,改前:

function inject_check($sql_str) { 
    $sql_str = strtolower($sql_str); 
    return eregi('fopen|post|eval|select|insert|and|or|update|delete|'|/*|*|../|./|union|into|load_file|outfile', $sql_str); // 进行过滤  
}
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解决方法:找到代码所在的文件,位置

function inject_check($sql_str) {  
    $sql_str = strtolower($sql_str); 
    return preg_match('/fopen|post|eval|select|insert|and|or|update|delete|'|/*|*|../|./|union|into|load_file|outfile/', $sql_str); // 进行过滤  
}
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注意:一定要加'/'开头与结束,Tips:此问题在php5.2之前版本不会出现.


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