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<?php $arr = [ 0 => "Column 1, Column 2 ,Column 3,Column 4,Column 5,Column 6", 1 => "19506,7254,321878,8,1,60", 2 => "187486,685,377,3,0,0", 3 => "187498,682285,3354,45,1,400", 4 => "18498,681285,38959,2,0,0", ]; $keys = explode(",", str_replace(" ","",$arr[0])); array_shift($arr); $arr = array_map(function($a) use($keys){ return array_combine($keys, explode(",",$a)); }, $arr); print_r($arr);
Output for 7.1.25 - 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 ( [0] => Array ( [Column1] => 19506 [Column2] => 7254 [Column3] => 321878 [Column4] => 8 [Column5] => 1 [Column6] => 60 ) [1] => Array ( [Column1] => 187486 [Column2] => 685 [Column3] => 377 [Column4] => 3 [Column5] => 0 [Column6] => 0 ) [2] => Array ( [Column1] => 187498 [Column2] => 682285 [Column3] => 3354 [Column4] => 45 [Column5] => 1 [Column6] => 400 ) [3] => Array ( [Column1] => 18498 [Column2] => 681285 [Column3] => 38959 [Column4] => 2 [Column5] => 0 [Column6] => 0 ) )

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