3v4l.org

run code in 300+ PHP versions simultaneously
<?php $b = $_FILES["file"]["name"]; //Have the filename be like this: // \" \"; exec('su root'); echo "Upload: " . $b . "<br>";
Output for 8.3.0 - 8.3.6
Warning: Undefined array key "file" in /in/8ELFH on line 2 Warning: Trying to access array offset on null in /in/8ELFH on line 2 Upload: <br>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Warning: Undefined array key "file" in /in/8ELFH on line 2 Warning: Trying to access array offset on value of type null in /in/8ELFH on line 2 Upload: <br>
Output for 7.4.0 - 7.4.33
Notice: Undefined index: file in /in/8ELFH on line 2 Notice: Trying to access array offset on value of type null in /in/8ELFH on line 2 Upload: <br>
Output for 7.3.32 - 7.3.33
Upload: <br>
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31
Notice: Undefined index: file in /in/8ELFH on line 2 Upload: <br>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Notice: Undefined index: file in /in/8ELFH on line 2 Upload: <br>

preferences:
269.62 ms | 402 KiB | 422 Q