strripos
(PHP 5)
strripos — Find position of last occurrence of a case-insensitive string in a string
Description
Find position of last occurrence of a case-insensitive string in a string. Unlike strrpos(), strripos() is case-insensitive.
Parameters
- haystack
-
The string to search in
- needle
-
Note that the needle may be a string of one or more characters.
- offset
-
The offset parameter may be specified to begin searching an arbitrary number of characters into the string.
Negative offset values will start the search at offset characters from the start of the string.
Return Values
Returns the numerical position of the last occurrence of needle. Also note that string positions start at 0, and not 1.
If needle is not found, FALSE is returned.
This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE, such as 0 or "". Please read the section on Booleans for more information. Use the === operator for testing the return value of this function.
Examples
Example #1 A simple strripos() example
<?php
$haystack = 'ababcd';
$needle = 'aB';
$pos = strripos($haystack, $needle);
if ($pos === false) {
echo "Sorry, we did not find ($needle) in ($haystack)";
} else {
echo "Congratulations!\n";
echo "We found the last ($needle) in ($haystack) at position ($pos)";
}
?>
The above example will output:
Congratulations! We found the last (aB) in (ababcd) at position (2)
See Also
- strpos() - Find position of first occurrence of a string
- stripos() - Find position of first occurrence of a case-insensitive string
- strrchr() - Find the last occurrence of a character in a string
- substr() - Return part of a string
- stristr() - Case-insensitive strstr
- strstr() - Find first occurrence of a string