php variable contains character code example

Example 1: php find if string contains

if (strpos($string, 'substring') !== false) {
	// do stuff 
}

Example 2: php check if string contains a char

$haystack = 'This is my haystack that we shall check'
$has_A = strpos($haystack, 'A') !== false;
$has_a = strpos($haystack, 'a') !== false;