PHP mb_strpos() Function
The mb_strpos() function is an inbuilt function in PHP that finds the position of string occurrence in the string.
Syntax:
mb_strpos( $haystack, $needle, $offset, $encoding ): int|false
Parameters: This function accepts 4 parameters that are described below:
- $haystack: This parameter is the main string parameter where we check the string.
- $needle: This parameter is searching string parameter in the main string.
- $offset: This parameter is an optional parameter. It is used for defining where you are to start searching string in the $haystack parameter.
- $encoding: This parameter is also optional. It is used for defining an encoding by using the mb_internal_encoding() function.
Return Values: This function returns return the integer of the first occurrence of $needle in the $haystack parameter. If $needle does not find in the $haystack parameter, it will return “false”.
Example 1: The following code demonstrates the mb_strpos() function.
PHP
<?php $string = "This is a test string"; $substring = "test"; $position = mb_strpos($string, $substring); // Output the position echo $position; ?> |
Output:
10
Example 2: The following code demonstrates the mb_strpos() function.
PHP
<?php $string = "w3wiki"; $substring = "test"; if (mb_strpos($string, $substring)) { echo "Substring is found"; } else { echo "Substring is not found"; } ?> |
Output:
Substring is not found
Reference: https://www.php.net/manual/en/function.mb-strpos.php