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<?php $handle = fopen('test.txt', 'w'); fwrite($handle, "Hello, world!"); fclose($handle); ?>
Output for 8.3.0 - 8.3.6
Warning: fopen(): open_basedir restriction in effect. File(test.txt) is not within the allowed path(s): (/tmp:/in:/etc) in /in/huckv on line 3 Warning: fopen(test.txt): Failed to open stream: Operation not permitted in /in/huckv on line 3 Fatal error: Uncaught TypeError: fwrite(): Argument #1 ($stream) must be of type resource, false given in /in/huckv:4 Stack trace: #0 /in/huckv(4): fwrite(false, 'Hello, world!') #1 {main} thrown in /in/huckv on line 4
Process exited with code 255.
Output for 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Warning: fopen(): open_basedir restriction in effect. File(test.txt) is not within the allowed path(s): (/tmp:/in:/etc) in /in/huckv on line 3 Warning: fopen(test.txt): Failed to open stream: Operation not permitted in /in/huckv on line 3 Fatal error: Uncaught TypeError: fwrite(): Argument #1 ($stream) must be of type resource, bool given in /in/huckv:4 Stack trace: #0 /in/huckv(4): fwrite(false, 'Hello, world!') #1 {main} thrown in /in/huckv on line 4
Process exited with code 255.
Output for 8.0.13
Warning: fopen(test.txt): Failed to open stream: Read-only file system in /in/huckv on line 3 Fatal error: Uncaught TypeError: fwrite(): Argument #1 ($stream) must be of type resource, bool given in /in/huckv:4 Stack trace: #0 /in/huckv(4): fwrite(false, 'Hello, world!') #1 {main} thrown in /in/huckv on line 4
Process exited with code 255.
Output for 7.3.32 - 7.3.33, 7.4.33
Warning: fopen(test.txt): failed to open stream: Read-only file system in /in/huckv on line 3 Warning: fwrite() expects parameter 1 to be resource, bool given in /in/huckv on line 4 Warning: fclose() expects parameter 1 to be resource, bool given in /in/huckv on line 5
Output for 7.3.0 - 7.3.31, 7.4.0 - 7.4.32
Warning: fopen(): open_basedir restriction in effect. File(test.txt) is not within the allowed path(s): (/tmp:/in:/etc) in /in/huckv on line 3 Warning: fopen(test.txt): failed to open stream: Operation not permitted in /in/huckv on line 3 Warning: fwrite() expects parameter 1 to be resource, bool given in /in/huckv on line 4 Warning: fclose() expects parameter 1 to be resource, bool given in /in/huckv on line 5
Output for 7.1.26 - 7.1.33, 7.2.17 - 7.2.33
Warning: fopen(): open_basedir restriction in effect. File(test.txt) is not within the allowed path(s): (/tmp:/in:/etc) in /in/huckv on line 3 Warning: fopen(test.txt): failed to open stream: Operation not permitted in /in/huckv on line 3 Warning: fwrite() expects parameter 1 to be resource, boolean given in /in/huckv on line 4 Warning: fclose() expects parameter 1 to be resource, boolean given in /in/huckv on line 5
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0
Warning: fopen(test.txt): failed to open stream: Permission denied in /in/huckv on line 3 Warning: fwrite() expects parameter 1 to be resource, boolean given in /in/huckv on line 4 Warning: fclose() expects parameter 1 to be resource, boolean given in /in/huckv on line 5
Output for 4.3.2 - 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
Warning: fopen(test.txt): failed to open stream: Permission denied in /in/huckv on line 3 Warning: fwrite(): supplied argument is not a valid stream resource in /in/huckv on line 4 Warning: fclose(): supplied argument is not a valid stream resource in /in/huckv on line 5
Output for 4.3.1
Warning: fopen(test.txt) [http://www.php.net/function.fopen]: failed to create stream: Permission denied in /in/huckv on line 3 Warning: fwrite(): supplied argument is not a valid stream resource in /in/huckv on line 4 Warning: fclose(): supplied argument is not a valid stream resource in /in/huckv on line 5
Output for 4.3.0
Warning: fopen(test.txt) [http://www.php.net/function.fopen]: failed to create stream: Read-only file system in /in/huckv on line 3 Warning: fwrite(): supplied argument is not a valid stream resource in /in/huckv on line 4 Warning: fclose(): supplied argument is not a valid stream resource in /in/huckv on line 5

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