- array_map: documentation ( source)
- array_merge: documentation ( source)
- var_export: documentation ( source)
- implode: documentation ( source)
- range: documentation ( source)
<?php
$a = range(1, 10);
$b = range('a', 'f');
$c = range('A', 'B');
var_export(implode(array_merge(...array_map(null, $a, $b, $c))));