strrchr
(PHP 4, PHP 5, PHP 7, PHP 8)
strrchr — Find the last occurrence of a character in a string
Parameters
haystack-
The string to search in
needle-
If needle contains more than one character,
only the first is used. This behavior is different from that of
strstr().
Prior to PHP 8.0.0, if needle is not a string, it is converted
to an integer and applied as the ordinal value of a character.
This behavior is deprecated as of PHP 7.3.0, and relying on it is highly
discouraged. Depending on the intended behavior, the
needle should either be explicitly cast to string,
or an explicit call to chr() should be performed.
before_needle-
If true, strrchr()
returns the part of the haystack before the
last occurrence of the needle (excluding the needle).
Return Values
This function returns the portion of string, or false if
needle is not found.
Examples
Example #1 strrchr() example
<?php
$ext = strrchr('somefile.txt', '.');
echo "file extension: $ext \n";
$ext = $ext ? strtolower(substr($ext, 1)) : '';
echo "file extension: $ext";
?>
The above example will output
something similar to:
file extension: .txt
file extension: txt
Notes
Note:
This function is
binary-safe.
See Also
- strstr() - Find the first occurrence of a string
- strrpos() - Find the position of the last occurrence of a substring in a string
strpos
String Functions