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<?phpecho "<ul>";for ( $layer = 0; $layer < 3; $layer++ ){    echo "<li>The layer number $layer";    echo "<ul>";       for ( $row = 0; $row < 3; $row++ )     {       echo "<li>The row number $row";       echo "<ul>";             for ( $col = 0; $col < 3; $col++ )        {            echo "<li>".$shop[$layer][$row][$col]."</li>";        }         echo "</ul>";        echo "</li>";    }    echo "</ul>";    echo "</li>";}   echo "</ul>";?>
Output for 5.3.0 - 5.3.29, 7.2.29 - 7.2.33, 7.3.16 - 7.3.31, 7.4.3 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
<?phpecho "<ul>";for ( $layer = 0; $layer < 3; $layer++ ){    echo "<li>The layer number $layer";    echo "<ul>";       for ( $row = 0; $row < 3; $row++ )     {       echo "<li>The row number $row";       echo "<ul>";             for ( $col = 0; $col < 3; $col++ )        {            echo "<li>".$shop[$layer][$row][$col]."</li>";        }         echo "</ul>";        echo "</li>";    }    echo "</ul>";    echo "</li>";}   echo "</ul>";?>
Output for 8.0.13
Parse error: syntax error, unexpected double-quoted string "<ul>" in /in/4T3cX on line 1
Process exited with code 255.
Output for 5.4.0 - 5.4.31, 7.3.32 - 7.3.33, 7.4.33
Parse error: syntax error, unexpected '"<ul>"' (T_CONSTANT_ENCAPSED_STRING) in /in/4T3cX on line 1
Process exited with code 255.

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