note 76533 added to function.array-map
| From: | bturchik at iponweb dot net | Date: | Thu, 19 Jul 2007 14:46:15 +0000 |
| Subject: | note 76533 added to function.array-map | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-128727@lists.php.net to get a copy of this message | ||
Maybe this one will be useful for someone:
function array_map_helper($mapper, $array) {
$mapper = preg_replace('/^return (.*?);$/', '$1', trim($mapper));
$result = array();
if (preg_match('/(\(?)(.*?)\s*=>\s*(.*?)(\)?)$/', $mapper, $matches)) {
list($full_found, $array_open, $left, $right, $array_close) = $matches;
if ($array_open && $array_close) {
$mapper = '$result[] = array' . $full_found . ';';
} else {
$mapper = '$result[' . $left . '] = ' . $right . ';';
}
} else {
$mapper = '$result[] = ' . $mapper . ';';
}
foreach ($array as $key => $value) {
eval($mapper);
}
return $result;
}
should be used like:
$array = array(array('foo' => 11, 'bar' => 22),
array('foo' => 111, 'bar' => 222),
array('foo' => 1111, 'bar' => 2222));
$mapped = array_map_helper('$value["foo"] => $value["bar"]',
$array);
var_dump will give
array(3) {
[11]=>
int(22)
[111]=>
int(222)
[1111]=>
int(2222)
}
or
$mapped = array_map_helper('$value["foo"]', $array);
var_dump will give
array(3) {
[0]=>
int(11)
[1]=>
int(111)
[2]=>
int(1111)
}
or
$mapped = array_map_helper('$value["foo"] + $value["bar"] . " at
position $key"', $array);
var_dump will give
array(3) {
[0]=>
string(16) "33 at position 0"
[1]=>
string(17) "333 at position 1"
[2]=>
string(18) "3333 at position 2"
}
----
Server IP: 69.147.83.197
Probable Submitter: 89.175.29.5
----
Manual Page -- http://www.php.net/manual/en/function.array-map.php
Edit -- https://master.php.net/note/edit/76533
Del: integrated -- https://master.php.net/note/delete/76533/integrated
Del: useless -- https://master.php.net/note/delete/76533/useless
Del: bad code -- https://master.php.net/note/delete/76533/bad+code
Del: spam -- https://master.php.net/note/delete/76533/spam
Del: non-english -- https://master.php.net/note/delete/76533/non-english
Del: in docs -- https://master.php.net/note/delete/76533/in+docs
Del: other reasons-- https://master.php.net/note/delete/76533
Reject -- https://master.php.net/note/reject/76533
Search -- https://master.php.net/manage/user-notes.php