3v4l.org

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<?php $variables['options']['attributes'] = [ 'attribute1' => 'value', 'href' => 'http://www.google.com.mx', 'attribute2' => 'value 2' ]; $attributes = array('href' => '') + $variables['options']['attributes']; print_r($attributes);
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Array ( [href] => [attribute1] => value [attribute2] => value 2 )

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110.57 ms | 404 KiB | 183 Q