It should be noted that offsetExists behaves like "offsetIsSet" rather than "offsetIsValid":
<?php
$arr = new SplFixedArray(3);
var_dump($arr->offsetExists(1)); // false
$arr[1] = 42; // $arr->offsetSet(1, 42);
var_dump($arr->offsetExists(1)); // true
$arr[1] = null; // $arr->offsetSet(1, null);
var_dump($arr->offsetExists(1)); // true
unset($arr[1]); // $arr->offsetUnset(1);
var_dump($arr->offsetExists(1)); // false
var_dump($arr);
/*
object(SplFixedArray)[1]
null
null
null
*/
?>
SplFixedArray::offsetExists
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SplFixedArray::offsetExists — Returns whether the requested index exists
Açıklama
Checks whether the requested index index
exists.
Bağımsız Değişkenler
-
index -
The index being checked.
Dönen Değerler
true if the requested index exists, otherwise false
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User Contributed Notes 1 note
depoemarc at swap dot fn dot ln dot googlemail dot com ¶
9 years ago
