3v4l.org

run code in 300+ PHP versions simultaneously
<?php $messages = [ 'Fout in veld 1', 'Fout in veld 2', 'Fouten in veld 3' => [ 'titel', 'is niet uniek', 'moet minimaal 3 tekens lang zijn', ], 'Fout in veld 6' ]; function rec($messages, $i = 0) { foreach($messages as $title => $message) { if (is_array($message)) { $k = $i + 1; return rec($message, $k); } $output = ''; for ($j = -1; $j < $i; $j++) { $output .= ' - '; } echo $output . $message + "\n"; } } rec($messages);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: Unsupported operand types: string + string in /in/vOv2h:31 Stack trace: #0 /in/vOv2h(37): rec(Array) #1 {main} thrown in /in/vOv2h on line 31
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Deprecated: The behavior of unparenthesized expressions containing both '.' and '+'/'-' will change in PHP 8: '+'/'-' will take a higher precedence in /in/vOv2h on line 31 Warning: A non-numeric value encountered in /in/vOv2h on line 31 Warning: A non-numeric value encountered in /in/vOv2h on line 31 0 Warning: A non-numeric value encountered in /in/vOv2h on line 31 Warning: A non-numeric value encountered in /in/vOv2h on line 31 0 Warning: A non-numeric value encountered in /in/vOv2h on line 31 Warning: A non-numeric value encountered in /in/vOv2h on line 31 0 Warning: A non-numeric value encountered in /in/vOv2h on line 31 Warning: A non-numeric value encountered in /in/vOv2h on line 31 0 Warning: A non-numeric value encountered in /in/vOv2h on line 31 Warning: A non-numeric value encountered in /in/vOv2h on line 31 0
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Warning: A non-numeric value encountered in /in/vOv2h on line 31 Warning: A non-numeric value encountered in /in/vOv2h on line 31 0 Warning: A non-numeric value encountered in /in/vOv2h on line 31 Warning: A non-numeric value encountered in /in/vOv2h on line 31 0 Warning: A non-numeric value encountered in /in/vOv2h on line 31 Warning: A non-numeric value encountered in /in/vOv2h on line 31 0 Warning: A non-numeric value encountered in /in/vOv2h on line 31 Warning: A non-numeric value encountered in /in/vOv2h on line 31 0 Warning: A non-numeric value encountered in /in/vOv2h on line 31 Warning: A non-numeric value encountered in /in/vOv2h on line 31 0
Output for 5.4.1 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20
00000
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200.3 ms | 402 KiB | 257 Q