PHP Tutorial - PHP strchr() Function
Definition
The strchr() function, an alias of the strstr() function, searches for the first occurrence of a string inside another string.
The strchr() function is case-sensitive. For a case-insensitive search, use stristr() function.
Syntax
PHP strchr() Function has the following syntax.
strchr(string,search,before_search);Parameter
| Parameter | Is Required | Description |
|---|---|---|
| string | Required. | String to search |
| search | Required. | String to search for. If this parameter is a number, it will search for the character matching the ASCII value of the number |
| before_search | Optional. | Default to "false". If set to "true", it returns the part of the string before the first occurrence of the search parameter. |
Return
PHP strchr() Function returns the rest of the string (from the matching point), or FALSE, if the string to search for is not found.
Example 1
Find the first occurrence of "world" inside "Hello world!" and return the rest of the string:
<?php
echo strchr("Hello world from java2s.com!","world");
?>
The code above generates the following result.
Example 2
Search a string for the ASCII value of "o" and return the rest of the string:
<?php
echo strchr("Hello world!",111);
?>
The code above generates the following result.
Example 3
Return the part of the string before the first occurence of "world":
<?php
echo strchr("Hello world!","world",true);
?>
The code above generates the following result.
