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<?php function happy($num){ $digs = (string) $num; $sum = 0; foreach(explode('', $digs) as $dig){ $sum == $dig; } return $sum; } echo happy(31);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Fatal error: Uncaught ValueError: explode(): Argument #1 ($separator) cannot be empty in /in/q2o1M:6 Stack trace: #0 /in/q2o1M(6): explode('', '31') #1 /in/q2o1M(12): happy(31) #2 {main} thrown in /in/q2o1M on line 6
Process exited with code 255.
Output for 5.2.5 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: explode(): Empty delimiter in /in/q2o1M on line 6 Warning: Invalid argument supplied for foreach() in /in/q2o1M on line 6 0
Output for 4.3.2 - 4.3.10, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.4
Warning: explode(): Empty delimiter. in /in/q2o1M on line 6 Warning: Invalid argument supplied for foreach() in /in/q2o1M on line 6 0
Output for 4.3.11
Warning: explode(): Empty delimiter. in /in/q2o1M on line 6 0
Output for 4.3.0 - 4.3.1
Warning: explode() [http://www.php.net/function.explode]: Empty delimiter. in /in/q2o1M on line 6 Warning: Invalid argument supplied for foreach() in /in/q2o1M on line 6 0

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