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<?php var_dump(['href' => ''] + ['href' => 'foobar']); var_dump(array_merge(['href' => ''], ['href' => 'foobar']));
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 - 8.3.25, 8.4.1 - 8.4.12
array(1) { ["href"]=> string(0) "" } array(1) { ["href"]=> string(6) "foobar" }
preferences:
153.41 ms | 408 KiB | 5 Q