stripos

(PHP 5)

stripos --  Find position of first occurrence of a case-insensitive string

Description

int stripos ( string haystack, string needle [, int offset] )

Returns the numeric position of the first occurrence of needle in the haystack string. Unlike strpos(), stripos() is case-insensitive.

Note that the needle may be a string of one or more characters.

If needle is not found, stripos() will return boolean FALSE.

Waarschuwing

Deze functie kan FALSE teruggeven, maar ook een andere waarde die naar FALSE evalueert, zoals 0 of "". Gebruik de === operator om de teruggeven waarde van deze functie te testen.

Voorbeeld 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";
}
?>

If needle is not a string, it is converted to an integer and applied as the ordinal value of a character.

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.

Opmerking: Deze functie is binary-safe

See also strpos(), strrpos(), strrchr(), substr(), stristr(), strstr(), strripos() and str_ireplace().