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<?php $a = array( 'post' => array( 'tr' => array( 'slug' => 'a' ), 'en' => array('slug'=>'b') ) ); echo var_dump(array_map('unserialize', array_unique(array_map('serialize', $a['post'])))); ?>
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { ["tr"]=> array(1) { ["slug"]=> string(1) "a" } ["en"]=> array(1) { ["slug"]=> string(1) "b" } }

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