For IF statements using OR or similar operators, after one is found to be true, does PHP continue checking the rest or does it stop there? For example.
if(true == true OR a_checking_function())
Would both be checked, or would PHP just check one?
在IF语句中，在发现一个为真之后，条件检查是否继续（PHP）
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2条回答 默认 最新
- duanhao1004 2013-05-28 20:18关注
No, as soon as the first
trueis found, it goes straight to the code in the braces. If you used an 'AND' keyword, then it would check the second condition.You may want to look at operator / logic precedence. For example, what would happen for the following conditions?:
if($a = $b AND $c = $d AND $e = $f)... if($a = $b AND $c = $d OR $e = $f)... if($a = $b OR $c = $d AND $e = $f)...本回答被题主选为最佳回答 , 对您是否有帮助呢?解决 无用评论 打赏举报 分享
- 2013-05-28 20:17回答 2 已采纳 No, as soon as the first true is found, it goes straight to the code in the braces. If you used an
- 2016-01-01 16:40回答 1 已采纳 It's doable using eval. See below a sample using a simpler condition $losowe = array('Kool','Awes
- 2017-03-21 20:44回答 1 已采纳 I suppose you can simplify check this way: include_once 'db.php'; session_start(); ob_start(); /
- 2021-03-23 12:47爷屁屁也有沟的博客 重要：本文最后更新于2016-05-22 22:54:47，某些文章具有时效性...在 PHP 中，我们可以使用以下条件语句：if 语句 – 如果指定条件为真，则执行代码if…else 语句 – 如果条件为 true，则执行代码；如果条件为 fals...
- 2017-10-02 13:11回答 3 已采纳 $destination['site'] has one value, but in your first if-statement, you're checking if it's either
- 2017-07-26 06:28回答 4 已采纳 You can add Switch cases like this for different results: switch ($item['description']) { cas
- 2019-01-20 16:25回答 1 已采纳 Here is what worked for the logic of showing updated post date and time if post is updated and if
- 2021-03-23 12:56一哥爱罗拉的博客 我有一个PHP脚本,它通过我自己的自定义函数运行一个值数组,该函数使用PHP函数preg_match.它正在寻找与我的正则表达式为$valueA的匹配,并且我要搜索的字符串为$valueB,如果找到匹配,则将其返回到$match,否则我不希望...
- 2017-05-25 04:32回答 4 已采纳 This is all about operator precedence <?php function a ($var) { if ($var == 1) {
- 2015-11-10 21:43回答 4 已采纳 you are using PDO in wrong way , you need to use prepared statements in PDO to be secure from mysq
- 2019-01-10 00:47回答 1 已采纳 okay referencing the following lines.. if ( $vpr_clid == 199 ) { $vpr_cl_name = "Shelley M
- 2021-03-22 20:10夏忆昔的博客 我们在开发PHP页面时，有时候会需要根据不同条件从数据库或者页面中读取信息，然后再执行相应的语句。涉及到这方面的需求时，我们就要了解掌握PHP中一些条件语句的使用。本篇文章就给大家详细的介绍PHP中if条件判断...
- 2018-06-14 22:07回答 1 已采纳 You could make an array with your three variables and then validate them with a foreach loop. Even
- 2021-03-23 12:47坚持坚持那些年的博客 PHP语言的if条件控制语句时间：2015-10-23if条件控制语句是所有流程控制语句中最简单,最常用的一个,根据获取的不同条件判断执行不同的语句,它的应用范围十分广泛,无论程序大小几乎都会应用到这句,其语法格式如下:if...
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