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<?php function test($var) { debug_zval_dump($var); $GLOBALS['a']++; //$GLOBALS['var']++; echo $var; echo $GLOBALS['a']; echo $GLOBALS['var']; } $a = 0; test($a);
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
int(0) 01 Warning: Undefined global variable $var in /in/7ASm5 on line 10
Output for 8.0.0 - 8.0.30
int(0) 01 Warning: Undefined array key "var" in /in/7ASm5 on line 10
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
int(0) 01 Notice: Undefined index: var in /in/7ASm5 on line 10
Output for 7.3.32 - 7.3.33
int(0) 01
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
long(0) refcount(4) 01 Notice: Undefined index: var in /in/7ASm5 on line 10
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
long(0) refcount(4) 01 Notice: Undefined index: var in /in/7ASm5 on line 10

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