- var_dump: documentation ( source)
- strpos: documentation ( source)
- array_filter: documentation ( source)
- array_keys: documentation ( source)
<?php
$arr = [
'plugin-folder/one' => 'one',
'plugin-folder/two' => 'two',
'muplugins/hey' => 'hey',
'vendor/laravel' => 'laravel'
];
$prefix = 'plugin-folder/';
$filtered = array_filter(array_keys($arr), function($key) use ($prefix) { return strpos($key, $prefix) === 0; });
var_dump($filtered);