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<?php $a = array(); $arrayKey = '[0][1]'; $a[0][1] = "two levels deep"; function get( $string, $vars ) { $keys = explode( '][', substr( $string, 1, -1 ) ); foreach( $keys as $key ) { $vars = $vars[$key]; } return $vars; } echo get($arrayKey, $vars );
Output for git.master, git.master_jit
Warning: Undefined variable $vars in /in/uQoMp on line 17 Warning: Trying to access array offset on value of type null in /in/uQoMp on line 12 Warning: Trying to access array offset on value of type null in /in/uQoMp on line 12
Output for rfc.property-hooks
Warning: Undefined variable $vars in /in/uQoMp on line 17 Warning: Trying to access array offset on null in /in/uQoMp on line 12 Warning: Trying to access array offset on null in /in/uQoMp on line 12

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