$haystack
, string $needle
[, int $offset = 0
] )
Find the numeric position of the first occurrence of
needle in the haystack
string.
Unlike the strpos(), stripos() is case-insensitive.
The string to search in.
Note that the needle may be a string of one or
more characters.
If needle is not a string, it is converted to
an integer and applied as the ordinal value of a character.
If specified, search will start this number of characters counted from the beginning of the string. Unlike strrpos() and strripos(), the offset cannot be negative.
Returns the position of where the needle exists relative to the beginnning of
the haystack string (independent of offset).
Also note that string positions start at 0, and not 1.
Example #1 stripos() examples
<?php
$findme = 'a';
$mystring1 = 'xyz';
$mystring2 = 'ABC';
$pos1 = stripos($mystring1, $findme);
$pos2 = stripos($mystring2, $findme);
// Nope, 'a' is certainly not in 'xyz'
if ($pos1 === false) {
echo "The string '$findme' was not found in the string '$mystring1'";
}
// Note our use of ===. Simply == would not work as expected
// because the position of 'a' is the 0th (first) character.
if ($pos2 !== false) {
echo "We found '$findme' in '$mystring2' at position $pos2";
}
?>
Note: This function is binary-safe.
