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<?php $yaml = ['suites' => ['asdfadf'> 3], 'extensions' => ['abd' => [''], 'bbb' => null]]; $extensions = ['newExt' => ['bbaba' => 111]]; var_dump(array_merge($yaml, ['extensions' => $entensions]));
based on JFS9V
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0beta1
Notice: Undefined variable: entensions in /in/aaaTQ on line 7 array(2) { ["suites"]=> array(1) { [0]=> bool(false) } ["extensions"]=> NULL }