PHP strrchr() Function: Description, Parameters, Return Value, and Usage Examples

The strrchr() function in PHP searches for the last occurrence of a specified character (or the first character of a string) within a given haystack string and returns the portion of the haystack starting from that position to the end.

Syntax: string strrchr(string $haystack, mixed $needle)

Return value: If the needle is found, the function returns the substring from the needle's last occurrence to the end of the haystack; otherwise it returns FALSE .

Parameters:

haystack : The string to be searched.

needle : If a string, only its first character is used; if not a string, it is converted to an integer and treated as an ASCII value.

Example 1:

<?php
echo strrchr("Hello world!", 101);
echo "\n\r";
// Get the last line content
$text = "Line 1\nLine 2\nLine 3";
$last = substr(strrchr($text, 10), 1);
echo $last;
?>

This example demonstrates retrieving the substring after the last newline character (ASCII 10) in a multi‑line string.

Example 2:

<?php
echo strrchr("Hello world! What a beautiful day!", What);
?>

The second example shows using a string as the needle, where only the first character of the needle ("W") is considered, returning the portion of the haystack from the last "W" onward.