Online PHP editor | refs for fXXsn

<?php $a = ['p' => ['id' => TRUE]]; $b = ['p' => FALSE]; print "Behaves as expected.\n"; var_dump(array_merge_recursive($a, $b)); print "\n\nOMG internal array pointer shenanigans can affect the results of array_merge_recursive()!\n"; $a['p'][0] = 'SOMETHING, anything!'; unset($a['p'][0]); var_dump(array_merge_recursive($a, $b)); print "\n\nThis keeps happening…\n"; var_dump(array_merge_recursive($a, $b)); print "\n\n… not even resetting the internal array pointer helps …\n"; reset($a['p']); var_dump(array_merge_recursive($a, $b)); print "\n\n… nor casting to object, cloning, then back to array …\n"; $a['p'] = (array) clone (object) $a['p']; var_dump(array_merge_recursive($a, $b)); print "\n\n… only forcefully recreating a copy-by-value of the array by using array_slice().\n"; $a['p'] = array_slice($a['p'], 0); var_dump(array_merge_recursive($a, $b));