PHP - 检查字符串是否包含一些字符

Question

I have a string which contains some of the following characters (comma is used as OR):

$car = (=, !=, <, <=. >, =>)

"string $car secondpart"

How can I see which character is used, adn take it in the new variable?

Answer 1

You can use this regex:

if (preg_match('/([!<]=|=>?|[<>])/', $car, $m))
   echo $m[1];

$m[1] will contain one of those string you're looking for.

RegEx Demo