stripcslashes
stripslashes
String Functions
PHP Manual

# stripos

(PHP 5)

stripos — Find the position of the first occurrence of a case-insensitive substring in a string

### Description

mixed stripos ( string `$haystack` , string `$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.

### Parameters

`haystack`

  The string to search in.

`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`

  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.

### Return Values

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.

Returns `FALSE` if the needle was not found.

Warning

This function may return Boolean `FALSE`, but may also return a non-Boolean value which evaluates to `FALSE`. Please read the section on Booleans for more information. Use the === operator for testing the return value of this function.

### Examples

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";
}
?>`

### Notes

> Note: This function is binary-safe.

### See Also

- mb_stripos() - Finds position of first occurrence of a string within another, case insensitive
- strpos() - Find the position of the first occurrence of a substring in a string
- strrpos() - Find the position of the last occurrence of a substring in a string
- strripos() - Find the position of the last occurrence of a case-insensitive substring in a string
- stristr() - Case-insensitive strstr
- substr() - Return part of a string
- str_ireplace() - Case-insensitive version of str_replace.

stripcslashes
stripslashes
String Functions
PHP Manual