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<?php $row = ['Rick', 'Lewi', 'Ferdi', 'Stefan']; $mapping = ['Team1', 'Team2', 'Team3']; $mappingCount = count($mappingCount); $row = array_merge(array_fill(0, $mappingCount, null), $row); var_dump($row);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $mappingCount in /in/f99r1 on line 4 Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /in/f99r1:4 Stack trace: #0 {main} thrown in /in/f99r1 on line 4
Process exited with code 255.

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