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run code in 300+ PHP versions simultaneously
<?php $foo = 'bar'; $GLOBALS[false] = 'foo'; var_dump($GLOBALS); echo $${''};
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(9) { ["_GET"]=> array(0) { } ["_POST"]=> array(0) { } ["_COOKIE"]=> array(0) { } ["_FILES"]=> array(0) { } ["argv"]=> array(1) { [0]=> string(9) "/in/jAtH0" } ["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/jAtH0" ["SCRIPT_NAME"]=> string(9) "/in/jAtH0" ["SCRIPT_FILENAME"]=> string(9) "/in/jAtH0" ["PATH_TRANSLATED"]=> string(9) "/in/jAtH0" ["DOCUMENT_ROOT"]=> string(0) "" ["REQUEST_TIME_FLOAT"]=> float(1448273134.0001) ["REQUEST_TIME"]=> int(1448273134) ["argv"]=> array(1) { [0]=> string(9) "/in/jAtH0" } ["argc"]=> int(1) } ["foo"]=> string(3) "bar" [""]=> string(3) "foo" } bar
Output for 8.0.0 - 8.0.30
array(10) { ["_GET"]=> array(0) { } ["_POST"]=> array(0) { } ["_COOKIE"]=> array(0) { } ["_FILES"]=> array(0) { } ["argv"]=> array(1) { [0]=> string(9) "/in/jAtH0" } ["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/jAtH0" ["SCRIPT_NAME"]=> string(9) "/in/jAtH0" ["SCRIPT_FILENAME"]=> string(9) "/in/jAtH0" ["PATH_TRANSLATED"]=> string(9) "/in/jAtH0" ["DOCUMENT_ROOT"]=> string(0) "" ["REQUEST_TIME_FLOAT"]=> float(1448273134.0001) ["REQUEST_TIME"]=> int(1448273134) ["argv"]=> array(1) { [0]=> string(9) "/in/jAtH0" } ["argc"]=> int(1) } ["GLOBALS"]=> *RECURSION* ["foo"]=> string(3) "bar" [0]=> string(3) "foo" } Warning: Undefined variable $ in /in/jAtH0 on line 7 Warning: Undefined variable $ in /in/jAtH0 on line 7
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
array(10) { ["_GET"]=> array(0) { } ["_POST"]=> array(0) { } ["_COOKIE"]=> array(0) { } ["_FILES"]=> array(0) { } ["argv"]=> array(1) { [0]=> string(9) "/in/jAtH0" } ["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/jAtH0" ["SCRIPT_NAME"]=> string(9) "/in/jAtH0" ["SCRIPT_FILENAME"]=> string(9) "/in/jAtH0" ["PATH_TRANSLATED"]=> string(9) "/in/jAtH0" ["DOCUMENT_ROOT"]=> string(0) "" ["REQUEST_TIME_FLOAT"]=> float(1448273134.0001) ["REQUEST_TIME"]=> int(1448273134) ["argv"]=> array(1) { [0]=> string(9) "/in/jAtH0" } ["argc"]=> int(1) } ["GLOBALS"]=> array(10) { ["_GET"]=> array(0) { } ["_POST"]=> array(0) { } ["_COOKIE"]=> array(0) { } ["_FILES"]=> array(0) { } ["argv"]=> array(1) { [0]=> string(9) "/in/jAtH0" } ["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/jAtH0" ["SCRIPT_NAME"]=> string(9) "/in/jAtH0" ["SCRIPT_FILENAME"]=> string(9) "/in/jAtH0" ["PATH_TRANSLATED"]=> string(9) "/in/jAtH0" ["DOCUMENT_ROOT"]=> string(0) "" ["REQUEST_TIME_FLOAT"]=> float(1448273134.0001) ["REQUEST_TIME"]=> int(1448273134) ["argv"]=> array(1) { [0]=> string(9) "/in/jAtH0" } ["argc"]=> int(1) } ["GLOBALS"]=> *RECURSION* ["foo"]=> string(3) "bar" [0]=> string(3) "foo" } ["foo"]=> string(3) "bar" [0]=> string(3) "foo" } Notice: Undefined variable: in /in/jAtH0 on line 7 Notice: Undefined variable: in /in/jAtH0 on line 7
Output for 7.3.32 - 7.3.33
array(10) { ["_GET"]=> array(0) { } ["_POST"]=> array(0) { } ["_COOKIE"]=> array(0) { } ["_FILES"]=> array(0) { } ["argv"]=> array(1) { [0]=> string(9) "/in/jAtH0" } ["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/jAtH0" ["SCRIPT_NAME"]=> string(9) "/in/jAtH0" ["SCRIPT_FILENAME"]=> string(9) "/in/jAtH0" ["PATH_TRANSLATED"]=> string(9) "/in/jAtH0" ["DOCUMENT_ROOT"]=> string(0) "" ["REQUEST_TIME_FLOAT"]=> float(1448273134.0001) ["REQUEST_TIME"]=> int(1448273134) ["argv"]=> array(1) { [0]=> string(9) "/in/jAtH0" } ["argc"]=> int(1) } ["GLOBALS"]=> array(10) { ["_GET"]=> array(0) { } ["_POST"]=> array(0) { } ["_COOKIE"]=> array(0) { } ["_FILES"]=> array(0) { } ["argv"]=> array(1) { [0]=> string(9) "/in/jAtH0" } ["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/jAtH0" ["SCRIPT_NAME"]=> string(9) "/in/jAtH0" ["SCRIPT_FILENAME"]=> string(9) "/in/jAtH0" ["PATH_TRANSLATED"]=> string(9) "/in/jAtH0" ["DOCUMENT_ROOT"]=> string(0) "" ["REQUEST_TIME_FLOAT"]=> float(1448273134.0001) ["REQUEST_TIME"]=> int(1448273134) ["argv"]=> array(1) { [0]=> string(9) "/in/jAtH0" } ["argc"]=> int(1) } ["GLOBALS"]=> *RECURSION* ["foo"]=> string(3) "bar" [0]=> string(3) "foo" } ["foo"]=> string(3) "bar" [0]=> string(3) "foo" }
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
array(10) { ["_GET"]=> array(0) { } ["_POST"]=> array(0) { } ["_COOKIE"]=> array(0) { } ["_FILES"]=> array(0) { } ["argv"]=> array(1) { [0]=> string(9) "/in/jAtH0" } ["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/jAtH0" ["SCRIPT_NAME"]=> string(9) "/in/jAtH0" ["SCRIPT_FILENAME"]=> string(9) "/in/jAtH0" ["PATH_TRANSLATED"]=> string(9) "/in/jAtH0" ["DOCUMENT_ROOT"]=> string(0) "" ["REQUEST_TIME_FLOAT"]=> float(1448273134.0001) ["REQUEST_TIME"]=> int(1448273134) ["argv"]=> array(1) { [0]=> string(9) "/in/jAtH0" } ["argc"]=> int(1) } ["GLOBALS"]=> *RECURSION* ["foo"]=> string(3) "bar" [0]=> string(3) "foo" } Notice: Undefined variable: in /in/jAtH0 on line 7 Notice: Undefined variable: in /in/jAtH0 on line 7

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