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<?php $transport = array('foot', 'bike', 'car', 'plane'); foreach($transport as $tr) {var_dump(prev($tr));}
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: prev(): Argument #1 ($array) must be of type array, string given in /in/pQh1T:4 Stack trace: #0 /in/pQh1T(4): prev('foot') #1 {main} thrown in /in/pQh1T on line 4
Process exited with code 255.

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