note 94748 deleted from function.array-keys by danbrown
| From: | danbrown@php.net | Date: | Mon, 23 Nov 2009 15:35:11 +0000 |
| Subject: | note 94748 deleted from function.array-keys by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-163199@lists.php.net to get a copy of this message | ||
Note Submitter: jojor at gmx dot net
----
function array_keys_md($array, $md_field = "id") {
$keys = array();
if (is_array($array) && count($array) > 0) {
foreach ($array as $a) {
if (isset($a[$md_field])) {
array_push($keys, $a[$md_field]);
} else
{
return false;
}
}
return $keys;
}
return false;
}
In the past i often needed the particular fields which are actually are right ids... for example two
dimensional assoc array returned by databases...
function array_keys_md($array, $md_field = "id") {
$keys = array();
if (is_array($array) && count($array) > 0) {
foreach ($array as $a) {
if (isset($a[$md_field])) {
array_push($keys, $a[$md_field]);
} else
{
return false;
}
}
return $keys;
}
return false;
}
an input array could be:
$array = array(
0 -> array(
"id" = 6,
"animal" = "cat"
),
1 -> array(
"id" = 9,
"animal" = "dog"
)
);
$id_keys = array_keys_md($array, "id"); // 6, 9
$animals_as_key = array_keys_md($array, "animal"); //"cat", "dog"