书上有一段关于strstr的代码,是根据提交的反馈信息关键字搜索来发送给不用的邮件
$totaladress = 'deedback@example.com';if(strstr($feedback,'shop')){ $totaladress = 'retail@example.com';}else { $totaladress = 'account@example.com';}
我看w3school上的讲解,strstr搜索到目标字符串后返回剩余部分,也就是字符串,否则返回false,那这里函数返回值直接用作if判断条件是什么意思?
谢谢讲解
回复讨论(解决方案)
strstr() 函数搜索一个字符串在另一个字符串中的第一次出现。
该函数返回字符串的其余部分(从匹配点)。如果未找到所搜索的字符串,则返回 false。
echo strstr("Hello world!","world");
?>
输出:
world!
if判断时 括号内会转成布尔值 字符串=true
你可以理解成一种简写
$a = strstr($feedback,'shop');
if($a != false){}
if判断时 括号内会转成布尔值 字符串=true
你可以理解成一种简写
$a = strstr($feedback,'shop');
if($a != false){}
谢谢,看了你的答案,再去网上看了看,我懂了

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