March 5, 2013
PHP – get a KEY of a nested array
Question by Obmerk Kronen
I have an array called $plugins that looks something like this :
Array
(
[path/to/file.php] => Array
(
[Name] => somevalue_a
[TextDomain] => somevalue_b
[value_c] => somevalue_c
[value_d] => somevalue_d
...
...
..
)
[path/to/file2.php] => Array
(
[Name] => somevalue_a
[TextDomain] => somevalue_b
[value_c] => somevalue_c
[value_d] => somevalue_d
...
...
..
)
)
Now, I am having trouble to get the KEY name (which is path)of each array element ..
function get_plugin_data(){
foreach ($plugins as $plugin => $data) {
$plugin_data = $plugins[$plugin];
// Start simple DEBUG
echo '</br>===============================</br>' ;
echo '</br><b>Plugin Name : </b>'. $data[Name]; .'</br>' ;
echo '</br><b>Plugin Path : </b>'. key($plugins) .'</br>' ; // <-- Problem here
echo '</br>TextDomain set : '. $data[TextDomain] .'</br>' ;
echo '</br>===============================</br>' ;
// End DEBUG
}
}
When using key($plugins) it gives me always the same value (first one).
When using key($data) it is giving me the FIRST LETTER only.. (??)
How can I get the this key of each nested array ?
Answer by kennypu
just return $plugin, not key($plugin). $plugin should already be the key.
to elaborate, when you use the syntax:
foreach ($plugins as $plugin => $data)
it is setting $plugin to the key, and $data to it’s value.
Answer by Starx
Your foreach loop indicates that the path are available as $plugin. Use that
foreach ($plugins as $plugin => $data) {
// ^ This represents the key of the array item
$plugin_data = $plugins[$plugin];
// Start simple DEBUG
echo '</br>===============================</br>' ;
echo '</br><b>Plugin Name : </b>'. $data[Name]; .'</br>' ;
echo '</br><b>Plugin Path : </b>'. $plugin .'</br>' ; // <-- Problem here
echo '</br>TextDomain set : '. $data[TextDomain] .'</br>' ;
echo '</br>===============================</br>' ;
// End DEBUG
}
