I have an array which is dynamically generated by parsing a web page:
titles Array
(
[0] => bookmarks
[1] => New Folder
[2] => New Folder2
)
and I want to insert html links into another, nultidemensiona l array
which is based on the first array:
$dl[$titles[0]][$titles[1]][$titles[2]]=$link;
However this only works if the titles array has exactly 3 members.
So I made this switch:
$num=sizeof($ti tles);
switch($num){
case 1:
$dl[$titles[0]][]=$link;
break;
case 2:
$dl[$titles[0]][$titles[1]][]=$link;
break;
case 3:
$dl[$titles[0]][$titles[1]][$titles[2]][]=$link;
break;
}
This works pretty good as long as I expand the switch to have more cases
than largest possible size for the titles array. However, I can't help
feeling that there must be a better way, something which would custom
generate the multidemensiona l array each time I insert data into it.
This is rediculous, but it might give you the idea of what I am looking
for:
foreach($titles as $title){
$dl.="[$title]";
}
$dl[]=$link;
Is this possible in PHP ?
red 4 1804
Red wrote: I have an array which is dynamically generated by parsing a web page: titles Array ( [0] => bookmarks [1] => New Folder [2] => New Folder2 ) and I want to insert html links into another, nultidemensiona l array which is based on the first array: $dl[$titles[0]][$titles[1]][$titles[2]]=$link;
However this only works if the titles array has exactly 3 members.
So I made this switch: $num=sizeof($ti tles); switch($num){ case 1: $dl[$titles[0]][]=$link; break; case 2: $dl[$titles[0]][$titles[1]][]=$link; break; case 3: $dl[$titles[0]][$titles[1]][$titles[2]][]=$link; break; }
This works pretty good as long as I expand the switch to have more cases than largest possible size for the titles array. However, I can't help feeling that there must be a better way, something which would custom generate the multidemensiona l array each time I insert data into it.
This is rediculous, but it might give you the idea of what I am looking for: foreach($titles as $title){ $dl.="[$title]"; }
$dl[]=$link;
Is this possible in PHP ?
red http://www.php.net/foreach
C.J.
.oO(Red) This is rediculous, but it might give you the idea of what I am looking for: foreach($title s as $title){ $dl.="[$title]"; }
$dl[]=$link;
Is this possible in PHP ?
Yep.
1) With eval(), but you don't really want this (too slow):
$key = '';
foreach ($titles as $title) {
$key .= "['$title']";
}
eval("\$dl{$key }[] = \$link;");
2) With a function that iterates over the titles and creates the nested
array structure on-the-fly, looks more complicated than eval(), but is
faster:
setValue($dl, $titles, $link);
function setValue(&$tree , $key, $value) {
$current = &$tree;
for ($i = 0; $i < count($key); $i++) {
$subkey = $key[$i];
// create subtree if it doesn't exist yet
if (!isset($curren t[$subkey])) {
$current[$subkey] = array();
}
// move one level further down the tree
$current = &$current[$subkey];
}
// finally store the value
$current[] = $value;
}
HTH
Micha
"Red" <gr****@reenie. org> wrote in message
news:Yx******** *************** @news.easynews. com... I have an array which is dynamically generated by parsing a web page: titles Array ( [0] => bookmarks [1] => New Folder [2] => New Folder2 ) and I want to insert html links into another, nultidemensiona l array which is based on the first array: $dl[$titles[0]][$titles[1]][$titles[2]]=$link;
However this only works if the titles array has exactly 3 members.
So I made this switch: $num=sizeof($ti tles); switch($num){ case 1: $dl[$titles[0]][]=$link; break; case 2: $dl[$titles[0]][$titles[1]][]=$link; break; case 3: $dl[$titles[0]][$titles[1]][$titles[2]][]=$link; break; }
This works pretty good as long as I expand the switch to have more cases than largest possible size for the titles array. However, I can't help feeling that there must be a better way, something which would custom generate the multidemensiona l array each time I insert data into it.
This is rediculous, but it might give you the idea of what I am looking for: foreach($titles as $title){ $dl.="[$title]"; }
$dl[]=$link;
Is this possible in PHP ?
red
Easy.
$dl = $link;
foreach(array_r everse($titles) as $title) {
$dl = array( $title => $dl );
}
Michael Fesser wrote: .oO(Red)
This is rediculous, but it might give you the idea of what I am looking for: foreach($titl es as $title){ $dl.="[$title]"; }
$dl[]=$link;
Is this possible in PHP ?
Yep.
1) With eval(), but you don't really want this (too slow):
$key = ''; foreach ($titles as $title) { $key .= "['$title']"; } eval("\$dl{$key }[] = \$link;");
2) With a function that iterates over the titles and creates the nested array structure on-the-fly, looks more complicated than eval(), but is faster:
setValue($dl, $titles, $link);
function setValue(&$tree , $key, $value) { $current = &$tree; for ($i = 0; $i < count($key); $i++) { $subkey = $key[$i]; // create subtree if it doesn't exist yet if (!isset($curren t[$subkey])) { $current[$subkey] = array(); } // move one level further down the tree $current = &$current[$subkey]; } // finally store the value $current[] = $value; }
HTH Micha
Wow. It took me two days to figure out what I needed, I don't think I
could ever have figured that out. Thanks, it works great.
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