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<?php $menu = array( array('id' => '1', 'catagory' => 'newbooks','title' => 'Alex','price' => 4.95, 'desc' => 'bbbb'), array('id' => '2','catagory' => 'newbooks','title' => 'David ','price' => 5.95, 'desc' => 'sss'), array('id' => '2','catagory' => 'newbooks','title' => 'David ','price' => 5.95, 'desc' => 'sss') ); $menu = array_map(function($v){ return $v['id']; }); print_r($menu);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught ArgumentCountError: array_map() expects at least 2 arguments, 1 given in /in/UnPn4:9 Stack trace: #0 /in/UnPn4(9): array_map(Object(Closure)) #1 {main} thrown in /in/UnPn4 on line 9
Process exited with code 255.

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