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strripos

Find position of last occurrence of a case-insensitive string in a string (PHP 5)
int strripos ( string haystack, string needle [, int offset] )

Find position of last occurrence of a case-insensitive string in a string. Unlike strrpos(), strripos() is case-insensitive.

Parameters

haystack
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 occurence of needle. Also note that string positions start at 0, and not 1.

If needle is not found, FALSE is returned.

Warning:

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 2464. 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)