要检查字符串是否具有特殊字符,PHP代码如下:
<?php function check_string($my_string){ $regex = preg_match('[@_!#$%^&*()<>?/|}{~:]', $my_string); if($regex) print("String has been accepted"); else print("String has not been accepted"); } $my_string = 'This_is_$_sample!'; check_string($my_string); ?>
输出结果
String has not been accepted
上面定义了一个名为“ check_string”的函数,该函数将字符串作为其参数-
$my_string = 'This_is_$_sample!';
使用正则表达式检查字符串是否具有特殊字符。如果有特殊字符,则会打印一条特定消息。在函数外部,定义字符串,并通过将字符串作为参数传递来调用函数-
function check_string($my_string){ $regex = preg_match('[@_!#$%^&*()<>?/|}{~:]', $my_string); if($regex) print("String has been accepted"); else print("String has not been accepted"); }