strripos
(PHP 5)
strripos — Find position of last occurrence of a case-insensitive string in a string
Description
int strripos
( string $haystack
, string $needle
[, int $offset
] )
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 occurence of
needle
. Also note that string positions start at 0,
and not 1.
If needle
is not found, FALSE is returned.
WarningThis 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)
strrev
