Checking if a string contains a character could be accomplished easily with a regular expression or you can use the built-in PHP functions.
To check if a string contains a character of a specific case you can use
$haystack = 'This is my haystack that we shall check' $has_A = strpos($haystack, 'A') !== false; $has_a = strpos($haystack, 'a') !== false;
And if you happen to not care about the character’s case, you can use
$has_a = stripos($haystack, 'a') !== false;
strpos functions return the numeric position of the character. If it
can’t find the character, it will return a boolean
false (hence the
These functions can also work with strings of two or more character and not limited to just a single character at a time.