Return the portion of a string before the first occurrence of a character in php

Question

In PHP, what is the simplest way to return the portion of a string before the first occurrence of a specific character?

For example, if I have a string...

\"

Answer 1

To sum up there're 4 ways

strstr($str,' ',true);
strtok($str,' ');
explode(' ', $str)[0];  //slowest
substr($str, 0, strpos($str, ' '));

The difference is that if no delimiter found:

strstr returns false

strtok explode returns whole string

substr returns empty string

if unexpected troubles with multibyte appear then this example

$str = mb_strstr($str, 'и', true) ?: $str;