Add UnneededRegularExpression

[wata727]

If you only want to test if a variable contains a specific character, you should use strpos() instead of preg_match().

Before

<?php

if (preg_match("/abc/", $var)) { // UnneededRegularExpression: Using `strpos()` instead of `preg_match()` will be faster.
    something($var);
}

After

<?php

if (strpos($var, "abc") !== false) {
    something($var);
}

This tool finds a call to preg_match() that uses unneeded regular expressions.

[wata727]

"charactors" is a misspelling of "characters"
link

Good catch 👍