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PHP in_array函数的一个风险用法

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2016-06-13 13:14:42921browse

PHP in_array函数的一个危险用法

<?php
if (in_array('', array(0,1))) echo '错误';
if (in_array(false, array(0,1))) echo '错误';
if (in_array(true, array(0,1))) echo '错误';
if (in_array($a['a'], array(0,1))) echo '错误';

PHP in_array()函数中如果这样用的话就会出现问题，所以使用的时候要谨慎

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