简体中文(ZH-CN) English(EN) 繁体中文(ZH-TW) 日本語(JA) 한국어(KO) Melayu(MS) Français(FR) Deutsch(DE)
Home > Backend Development > PHP Tutorial > body text

PHP in_array函数的一个风险用法

WBOY
Release： 2016-06-13 13:14:42
Original
816 people have browsed it

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';
Copy after login

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

Related labels：
array echo if in php
source：php.cn
Previous article： 请问大牛 在win系统上 php调用系统命令删目录 Next article： php没法使用localhost连接mysql服务器
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
PHP arrays obtained from URL parameters do not behave as expected I have a URL parameter that contains the category ID and I want to treat it as an array li...
From 2024-04-06 22:09:02
0
1
1428
PHP HTTP request ignores parameters Before I start asking questions, I should mention that I am re-learning PHP after a long t...
From 2024-04-05 10:54:48
0
1
3536
Set relation "OR" for meta_query ORtax_query I'm trying to use WP_Query to create a query containing a meta_query element and a tax_que...
From 2024-04-04 20:01:43
0
1
1346
Search posts by tags I need to display posts by tags. My solution works for a single tag like this: Route::get(...
From 2024-04-03 22:38:54
0
1
430
Find a value in a multidimensional array and return the value in the same array I'm trying to find a value in an array of milti arrays and after finding it I want to retu...
From 2024-04-03 12:43:01
0
2
375
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn：Public welfare online PHP training，Help PHP learners grow quickly！