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<?php $nullvar = null; $nullstr = ''; $notnull = 'foo'; $unset = 'something'; unset($unset); $results = array( '<h1>Results</h1>' , '<br/>$nullvar = ' , var_dump(isset($nullvar)) , '<br/> $nullstr = ' , var_dump(isset($nullstr)) , '<br/>$notnull = ' , var_dump(isset($notnull)) , '<br/>$unset = ' , var_dump(isset($unset)) ); echo impode(' ',$results);
Output for git.master, git.master_jit, rfc.property-hooks
bool(false) bool(true) bool(true) bool(false) Fatal error: Uncaught Error: Call to undefined function impode() in /in/hV43O:19 Stack trace: #0 {main} thrown in /in/hV43O on line 19
Process exited with code 255.

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