strripos

Manual PHP

strripos

(PHP 5)

strripos -- Find position of last occurrence of a case-insensitive string in a string

Description

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

Returns the numeric position of the last occurrence of needle in the haystack string. Unlike strrpos(), strripos() is case-insensitive. Also note that string positions start at 0, and not 1.

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

If needle is not found, FALSE is returned.

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Această funcţie e posibil să returneze FALSE, dar poate returna, de asemenea, o valoare ce poate fi evaluată ca fiind FALSE, cum ar fi 0 sau "". Citeşte despre tipul boolean pentru mai multe informaţii. Te rog foloseşte operatorul === pentru a testa valoarea returnată de această funcţie.

Exemplu 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)";
}
?>

Outputs:

Congratulations!
   We found the last (aB) in (ababcd) at position (2)

offset may be specified to begin searching an arbitrary number of characters into the string. Negative values will stop searching at an arbitrary point prior to the end of the string.

strripos

Description

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