strripos
(PHP 5)
strripos — Find position of last occurrence of a case-insensitive string in a string
Beskrivelse
Find position of last occurrence of a case-insensitive string in a string. Unlike strrpos(), strripos() is case-insensitive.
Parameterliste
- haystack
-
- 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.
Returneringsværdier
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.
Denne funktion returnerer muligvis en Boolean FALSE, men kan også returnere en ikke-Booleansk værdi som evalueres til FALSE, så som 0 eller "". Læs venligst sektionen om Booleans for mere information. brug === operatoren for at teste den værdi som returneres af denne funktion.
Eksempler
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)";
}
?>
Ovenstående eksempel vil udskrive:
Congratulations! We found the last (aB) in (ababcd) at position (2)