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stripos
Find position of first occurrence of a case-insensitive string
(PHP 5)
int stripos ( string haystack, string needle [, int offset] )
Parameters
- haystack
- needle
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.
- offset
The optional offset parameter allows you to specify which character in haystack to start searching. The position returned is still relative to the beginning of haystack.
Return Values
If needle is not found,
stripos() will return boolean FALSE.
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 2453. 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";
}
?>