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<?php $abc = array( 'rec_1' => array('f_name'=>'Aron','m_i'=>'M'), 'rec_2' => array('f_name'=>'Abbey','m_i'=>'D'), 'rec_3' => array('f_name'=>'Alice','m_i'=>'P')); function build_sorter($key) { var_dump($a); var_dump($b); exit; return function ($a, $b) use ($key) { return strnatcmp($a[$key], $b[$key]); }; } usort($abc, build_sorter('f_name')); foreach ($abc as $item) { echo $item['f_name'] . ', ' . $item['m_i'] . "\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $a in /in/OA8IU on line 8 NULL Warning: Undefined variable $b in /in/OA8IU on line 9 NULL

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