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<?php $starts_with = 'bk-'; $facets = [ ['name' => 'bk-0001'], ['name' => 'bk-0002'], ['name' => 'bx-0001'] ]; $new_facets = array_filter($facets, function ($var) use ($starts_with) { return substr($var['name'], 0, strlen($starts_with)) === $starts_with; }); print_r($new_facets);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Array ( [name] => bk-0001 ) [1] => Array ( [name] => bk-0002 ) )

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