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<?php $values = array( 'one' => array( 'title' => 'Title One', 'uri' => 'http://example.com/one', ), 'two' => array( 'title' => 'Title Two', 'uri' => 'http://example.com/two', ), ); $a = function($values) { $return = array(); foreach($values as $value) $return[] = '<a href="' . $value['uri'] . '">' . $value['title'] . '</a>'; return $return; }; echo ($a instanceof Closure); $final_string = implode(' | ', (function($values) { $return = array(); foreach($values as $value) $return[] = '<a href="' . $value['uri'] . '">' . $value['title'] . '</a>'; return $return; })); echo $final_string;
Output for git.master, git.master_jit, rfc.property-hooks
1 Fatal error: Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, Closure given in /in/5nWnM:25 Stack trace: #0 /in/5nWnM(25): implode(' | ', Object(Closure)) #1 {main} thrown in /in/5nWnM on line 25
Process exited with code 255.

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