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run code in 300+ PHP versions simultaneously
<?php $m = []; //$GLOBALS = array_diff_key($GLOBALS, ['m'=>null]); unset($GLOBALS['m']); var_dump($GLOBALS, $m);
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Warning: Undefined variable $m in /in/YevnO on line 5 array(7) { ["_GET"]=> array(0) { } ["_POST"]=> array(0) { } ["_COOKIE"]=> array(0) { } ["_FILES"]=> array(0) { } ["argv"]=> array(1) { [0]=> string(9) "/in/YevnO" } ["argc"]=> int(1) ["_SERVER"]=> array(17) { ["TERM"]=> string(5) "xterm" ["PATH"]=> string(13) "/usr/bin:/bin" ["LANG"]=> string(1) "C" ["SHELL"]=> string(7) "/bin/sh" ["MAIL"]=> string(16) "/var/mail/nobody" ["LOGNAME"]=> string(6) "nobody" ["USER"]=> string(6) "nobody" ["HOME"]=> string(4) "/tmp" ["PHP_SELF"]=> string(9) "/in/YevnO" ["SCRIPT_NAME"]=> string(9) "/in/YevnO" ["SCRIPT_FILENAME"]=> string(9) "/in/YevnO" ["PATH_TRANSLATED"]=> string(9) "/in/YevnO" ["DOCUMENT_ROOT"]=> string(0) "" ["REQUEST_TIME_FLOAT"]=> float(1397233530.0001) ["REQUEST_TIME"]=> int(1397233530) ["argv"]=> array(1) { [0]=> string(9) "/in/YevnO" } ["argc"]=> int(1) } } NULL
Output for 8.0.0 - 8.0.30
Warning: Undefined variable $m in /in/YevnO on line 5 array(8) { ["_GET"]=> array(0) { } ["_POST"]=> array(0) { } ["_COOKIE"]=> array(0) { } ["_FILES"]=> array(0) { } ["argv"]=> array(1) { [0]=> string(9) "/in/YevnO" } ["argc"]=> int(1) ["_SERVER"]=> array(17) { ["TERM"]=> string(5) "xterm" ["PATH"]=> string(13) "/usr/bin:/bin" ["LANG"]=> string(1) "C" ["SHELL"]=> string(7) "/bin/sh" ["MAIL"]=> string(16) "/var/mail/nobody" ["LOGNAME"]=> string(6) "nobody" ["USER"]=> string(6) "nobody" ["HOME"]=> string(4) "/tmp" ["PHP_SELF"]=> string(9) "/in/YevnO" ["SCRIPT_NAME"]=> string(9) "/in/YevnO" ["SCRIPT_FILENAME"]=> string(9) "/in/YevnO" ["PATH_TRANSLATED"]=> string(9) "/in/YevnO" ["DOCUMENT_ROOT"]=> string(0) "" ["REQUEST_TIME_FLOAT"]=> float(1397233530.0001) ["REQUEST_TIME"]=> int(1397233530) ["argv"]=> array(1) { [0]=> string(9) "/in/YevnO" } ["argc"]=> int(1) } ["GLOBALS"]=> *RECURSION* } NULL
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: m in /in/YevnO on line 5 array(8) { ["_GET"]=> array(0) { } ["_POST"]=> array(0) { } ["_COOKIE"]=> array(0) { } ["_FILES"]=> array(0) { } ["argv"]=> array(1) { [0]=> string(9) "/in/YevnO" } ["argc"]=> int(1) ["_SERVER"]=> array(17) { ["TERM"]=> string(5) "xterm" ["PATH"]=> string(13) "/usr/bin:/bin" ["LANG"]=> string(1) "C" ["SHELL"]=> string(7) "/bin/sh" ["MAIL"]=> string(16) "/var/mail/nobody" ["LOGNAME"]=> string(6) "nobody" ["USER"]=> string(6) "nobody" ["HOME"]=> string(4) "/tmp" ["PHP_SELF"]=> string(9) "/in/YevnO" ["SCRIPT_NAME"]=> string(9) "/in/YevnO" ["SCRIPT_FILENAME"]=> string(9) "/in/YevnO" ["PATH_TRANSLATED"]=> string(9) "/in/YevnO" ["DOCUMENT_ROOT"]=> string(0) "" ["REQUEST_TIME_FLOAT"]=> float(1397233530.0001) ["REQUEST_TIME"]=> int(1397233530) ["argv"]=> array(1) { [0]=> string(9) "/in/YevnO" } ["argc"]=> int(1) } ["GLOBALS"]=> array(8) { ["_GET"]=> array(0) { } ["_POST"]=> array(0) { } ["_COOKIE"]=> array(0) { } ["_FILES"]=> array(0) { } ["argv"]=> array(1) { [0]=> string(9) "/in/YevnO" } ["argc"]=> int(1) ["_SERVER"]=> array(17) { ["TERM"]=> string(5) "xterm" ["PATH"]=> string(13) "/usr/bin:/bin" ["LANG"]=> string(1) "C" ["SHELL"]=> string(7) "/bin/sh" ["MAIL"]=> string(16) "/var/mail/nobody" ["LOGNAME"]=> string(6) "nobody" ["USER"]=> string(6) "nobody" ["HOME"]=> string(4) "/tmp" ["PHP_SELF"]=> string(9) "/in/YevnO" ["SCRIPT_NAME"]=> string(9) "/in/YevnO" ["SCRIPT_FILENAME"]=> string(9) "/in/YevnO" ["PATH_TRANSLATED"]=> string(9) "/in/YevnO" ["DOCUMENT_ROOT"]=> string(0) "" ["REQUEST_TIME_FLOAT"]=> float(1397233530.0001) ["REQUEST_TIME"]=> int(1397233530) ["argv"]=> array(1) { [0]=> string(9) "/in/YevnO" } ["argc"]=> int(1) } ["GLOBALS"]=> *RECURSION* } } NULL
Output for 7.3.32 - 7.3.33
array(8) { ["_GET"]=> array(0) { } ["_POST"]=> array(0) { } ["_COOKIE"]=> array(0) { } ["_FILES"]=> array(0) { } ["argv"]=> array(1) { [0]=> string(9) "/in/YevnO" } ["argc"]=> int(1) ["_SERVER"]=> array(17) { ["TERM"]=> string(5) "xterm" ["PATH"]=> string(13) "/usr/bin:/bin" ["LANG"]=> string(1) "C" ["SHELL"]=> string(7) "/bin/sh" ["MAIL"]=> string(16) "/var/mail/nobody" ["LOGNAME"]=> string(6) "nobody" ["USER"]=> string(6) "nobody" ["HOME"]=> string(4) "/tmp" ["PHP_SELF"]=> string(9) "/in/YevnO" ["SCRIPT_NAME"]=> string(9) "/in/YevnO" ["SCRIPT_FILENAME"]=> string(9) "/in/YevnO" ["PATH_TRANSLATED"]=> string(9) "/in/YevnO" ["DOCUMENT_ROOT"]=> string(0) "" ["REQUEST_TIME_FLOAT"]=> float(1397233530.0001) ["REQUEST_TIME"]=> int(1397233530) ["argv"]=> array(1) { [0]=> string(9) "/in/YevnO" } ["argc"]=> int(1) } ["GLOBALS"]=> array(8) { ["_GET"]=> array(0) { } ["_POST"]=> array(0) { } ["_COOKIE"]=> array(0) { } ["_FILES"]=> array(0) { } ["argv"]=> array(1) { [0]=> string(9) "/in/YevnO" } ["argc"]=> int(1) ["_SERVER"]=> array(17) { ["TERM"]=> string(5) "xterm" ["PATH"]=> string(13) "/usr/bin:/bin" ["LANG"]=> string(1) "C" ["SHELL"]=> string(7) "/bin/sh" ["MAIL"]=> string(16) "/var/mail/nobody" ["LOGNAME"]=> string(6) "nobody" ["USER"]=> string(6) "nobody" ["HOME"]=> string(4) "/tmp" ["PHP_SELF"]=> string(9) "/in/YevnO" ["SCRIPT_NAME"]=> string(9) "/in/YevnO" ["SCRIPT_FILENAME"]=> string(9) "/in/YevnO" ["PATH_TRANSLATED"]=> string(9) "/in/YevnO" ["DOCUMENT_ROOT"]=> string(0) "" ["REQUEST_TIME_FLOAT"]=> float(1397233530.0001) ["REQUEST_TIME"]=> int(1397233530) ["argv"]=> array(1) { [0]=> string(9) "/in/YevnO" } ["argc"]=> int(1) } ["GLOBALS"]=> *RECURSION* } } NULL
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Notice: Undefined variable: m in /in/YevnO on line 5 array(8) { ["_GET"]=> array(0) { } ["_POST"]=> array(0) { } ["_COOKIE"]=> array(0) { } ["_FILES"]=> array(0) { } ["argv"]=> array(1) { [0]=> string(9) "/in/YevnO" } ["argc"]=> int(1) ["_SERVER"]=> array(17) { ["TERM"]=> string(5) "xterm" ["PATH"]=> string(13) "/usr/bin:/bin" ["LANG"]=> string(1) "C" ["SHELL"]=> string(7) "/bin/sh" ["MAIL"]=> string(16) "/var/mail/nobody" ["LOGNAME"]=> string(6) "nobody" ["USER"]=> string(6) "nobody" ["HOME"]=> string(4) "/tmp" ["PHP_SELF"]=> string(9) "/in/YevnO" ["SCRIPT_NAME"]=> string(9) "/in/YevnO" ["SCRIPT_FILENAME"]=> string(9) "/in/YevnO" ["PATH_TRANSLATED"]=> string(9) "/in/YevnO" ["DOCUMENT_ROOT"]=> string(0) "" ["REQUEST_TIME_FLOAT"]=> float(1397233530.0001) ["REQUEST_TIME"]=> int(1397233530) ["argv"]=> array(1) { [0]=> string(9) "/in/YevnO" } ["argc"]=> int(1) } ["GLOBALS"]=> *RECURSION* } NULL
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/YevnO on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/YevnO on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/YevnO on line 2
Process exited with code 255.

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