3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo bin2hex(random_bytes($length));
Output for 8.1.0 - 8.1.6
Warning: Undefined variable $length in /in/kh5Ls on line 3 Deprecated: random_bytes(): Passing null to parameter #1 ($length) of type int is deprecated in /in/kh5Ls on line 3 Fatal error: Uncaught ValueError: random_bytes(): Argument #1 ($length) must be greater than 0 in /in/kh5Ls:3 Stack trace: #0 /in/kh5Ls(3): random_bytes(NULL) #1 {main} thrown in /in/kh5Ls on line 3
Process exited with code 255.
Output for 8.0.0 - 8.0.19
Warning: Undefined variable $length in /in/kh5Ls on line 3 Fatal error: Uncaught ValueError: random_bytes(): Argument #1 ($length) must be greater than 0 in /in/kh5Ls:3 Stack trace: #0 /in/kh5Ls(3): random_bytes(NULL) #1 {main} thrown in /in/kh5Ls on line 3
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.29
Notice: Undefined variable: length in /in/kh5Ls on line 3 Fatal error: Uncaught Error: Length must be greater than 0 in /in/kh5Ls:3 Stack trace: #0 /in/kh5Ls(3): random_bytes(NULL) #1 {main} thrown in /in/kh5Ls on line 3
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Call to undefined function random_bytes() in /in/kh5Ls on line 3
Process exited with code 255.

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