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<?php $column_names= [ 0=>'student_id', 1=>'college_name', 2=>'name' ]; $student_details=[ 0=>[ 0=>'1', 1=>'xxx', 2=>'aaa' ], 1=>[ 0=>'2', 1=>'yyy', 2=>'bbb' ] ]; foreach($student_details as &$sub){ $sub = array_combine($column_names, $sub); } Var_dump($student_details);
Output for 5.6.38, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
array(2) { [0]=> array(3) { ["student_id"]=> string(1) "1" ["college_name"]=> string(3) "xxx" ["name"]=> string(3) "aaa" } [1]=> &array(3) { ["student_id"]=> string(1) "2" ["college_name"]=> string(3) "yyy" ["name"]=> string(3) "bbb" } }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(2) { [0]=> array(3) { ["student_id"]=> string(1) "1" ["college_name"]=> string(3) "xxx" ["name"]=> string(3) "aaa" } [1]=> &array(3) { ["student_id"]=> string(1) "2" ["college_name"]=> string(3) "yyy" ["name"]=> string(3) "bbb" } }

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