note 84112 added to function.next
| From: | rayro at gmx dot de | Date: | Sat, 28 Jun 2008 13:23:53 +0000 |
| Subject: | note 84112 added to function.next | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-140895@lists.php.net to get a copy of this message | ||
@GPatmore and @gigs at gigstaggart dot com:
foreach() does not use the real array you are give in...
If you want to delete something in the array, the array passed through foreach() has to be a
reference to your array...
<?php
$my_array = explode(',','a,b,c,d,e,f,g');
$ary =& $my_array;
// Note: foreach(&ary => $a) wont work! Thats a little bit pity... :(
foreach($ary as $a){
print 'letter ' . $a;
if(next($ary)){
unset($ary[count($ary) - 1]);
print '<br>';
}else{
print '<br>dun!';
}
}
?>
would finally print:
letter a
letter b
letter c
letter d
dun!
Ohterwise you are able to make a while() as followed:
<?php
$ary = explode(',','a,b,c,d,e,f,g');
while(list($k,$a) = each($ary)) {
print 'letter ' . $a;
if(next($ary)){
prev($ary);
unset($ary[count($ary) - 1]);
print '<br>';
}else{
print '<br>dun!';
}
}
?>
Consider the prev() after the next()... ;)
This is essential for the each(), which means that YOU decide the pointer, while foreach() uses own
pointers...
----
Server IP: 217.13.201.10
Probable Submitter: 84.135.114.235
----
Manual Page -- http://www.php.net/manual/en/function.next.php
Edit -- https://master.php.net/note/edit/84112
Del: integrated -- https://master.php.net/note/delete/84112/integrated
Del: useless -- https://master.php.net/note/delete/84112/useless
Del: bad code -- https://master.php.net/note/delete/84112/bad+code
Del: spam -- https://master.php.net/note/delete/84112/spam
Del: non-english -- https://master.php.net/note/delete/84112/non-english
Del: in docs -- https://master.php.net/note/delete/84112/in+docs
Del: other reasons-- https://master.php.net/note/delete/84112
Reject -- https://master.php.net/note/reject/84112
Search -- https://master.php.net/manage/user-notes.php