note 65668 added to language.oop5.iterations
| From: | chad0x40herballure0x2ecom at osu1 dot php dot net | Date: | Fri, 05 May 2006 13:46:29 +0000 |
| Subject: | note 65668 added to language.oop5.iterations | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-110625@lists.php.net to get a copy of this message | ||
The example code given for valid() will break if the array contains a FALSE value. This code prints
out a single "bool(true)" and exits the loop when it gets to the FALSE:
<?php
$A = array(TRUE, FALSE, TRUE, TRUE);
while(current($A) !== FALSE) {
var_dump(current($A));
next($A);
}
?>
Instead, the key() function should be used, since it returns NULL only at the end of the array. This
code displays all four elements and then exits:
<?php
$A = array(TRUE, FALSE, TRUE, TRUE);
while(!is_null(key($A))) {
var_dump(current($A));
next($A);
}
?>
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Manual Page -- http://www.php.net/manual/en/language.oop5.iterations.php
Edit -- http://master.php.net/note/edit/65668
Del: integrated -- http://master.php.net/note/delete/65668/integrated
Del: useless -- http://master.php.net/note/delete/65668/useless
Del: bad code -- http://master.php.net/note/delete/65668/bad+code
Del: spam -- http://master.php.net/note/delete/65668/spam
Del: non-english -- http://master.php.net/note/delete/65668/non-english
Del: in docs -- http://master.php.net/note/delete/65668/in+docs
Del: other reasons-- http://master.php.net/note/delete/65668
Reject -- http://master.php.net/note/reject/65668
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