PHP function stripos()

Availability in PHP 5.0

Finds the position of the first occurrence of a string without character size resolution.

TIP:

The stripos function has been used in the past to check whether a string contains a substring. Since PHP 8.0, there is a native str_contains() function for this.

Parameters

Parameter	Data Type	Default Value	Note
$haystack	string	not	String to search
$needle	string	not	Note that a needle can be a string of one or more characters.
$offset	int	null	The optional offset parameter allows you to specify which character in the haystack to start searching for. The returned position is still relative to the start of the stack.

Return values

int - returns the position where the found substring starts.

If the substring is not found in the searched string, return false.

Other resources

Official stripos documentation