How can I find out if a variable contains one of the listed characters?

Question

PHP

Hello.

There was such task
there is a variable, let's say

$a = ''Hello moto;

And you need to find out if there are characters h and t in this variable.

How can this be implemented? what function would you recommend to use for this?
And how to list all characters to be searched?

Answer 1

$re = '/[eps]/m';
$str = 'help me please';

preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);

// Print the entire match result
var_dump($matches);

Answer 2

It should have been written in the book you are reading
https://www.php.net/manual/en/function.strrpos.php

Answer 3

If the task is this:

How can I find out if a variable contains one of the listed characters?

then use the strpbrk function .
And if it's like this:

$a = ''Hello moto;
And you need to find out if there are characters h and t in this variable.

then use the preg_match function .