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<?php $arr = array ( 'expert_skills' => ',1,2,3,7', 'inter_skills' => ',9,10,7,8,9', 'beginner_skills' => ',6,8' ); $arr = array_map(function ($v) { return array_filter(explode(',', $v)); }, $arr); print_r($arr);
Output for 5.6.38 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
Array ( [expert_skills] => Array ( [1] => 1 [2] => 2 [3] => 3 [4] => 7 ) [inter_skills] => Array ( [1] => 9 [2] => 10 [3] => 7 [4] => 8 [5] => 9 ) [beginner_skills] => Array ( [1] => 6 [2] => 8 ) )
preferences:
131.46 ms | 409 KiB | 5 Q