PHP string "contains" [duplicate]
PHP 8 or newer:
Use the str_contains function.
if (str_contains($str, ".")){ echo 'Found it';}else{ echo 'Not found.';}PHP 7 or older:
if (strpos($str, '.') !== FALSE){ echo 'Found it';}else{ echo 'Not found.';}Note that you need to use the !== operator. If you use != or <> and the '.' is found at position 0, the comparison will evaluate to true because 0 is loosely equal to false.
You can use these string functions,
strstr — Find the first occurrence of a string
stristr — Case-insensitive strstr()
strrchr — Find the last occurrence of a character in a string
strpos — Find the position of the first occurrence of a substring in a string
strpbrk — Search a string for any of a set of characters
If that doesn't help then you should use preg regular expression
preg_match — Perform a regular expression match