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<?php class demo{ public static $demo = "static.demo"; public static function mydemo(){ echo "static.mydemo"; } } $a = new demo(); echo $a::$demo;//版本的问题吧php 5.2.17报错 $demo::$demo;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
static.demo Warning: Undefined variable $demo in /in/dl2vc on line 11 Fatal error: Uncaught Error: Class name must be a valid object or a string in /in/dl2vc:11 Stack trace: #0 {main} thrown in /in/dl2vc on line 11
Process exited with code 255.
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 - 7.4.25, 7.4.27 - 7.4.33
static.demo Notice: Undefined variable: demo in /in/dl2vc on line 11 Fatal error: Uncaught Error: Class name must be a valid object or a string in /in/dl2vc:11 Stack trace: #0 {main} thrown in /in/dl2vc on line 11
Process exited with code 255.
Output for 7.3.32 - 7.3.33, 7.4.26
static.demo Fatal error: Uncaught Error: Class name must be a valid object or a string in /in/dl2vc:11 Stack trace: #0 {main} thrown in /in/dl2vc on line 11
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
static.demo Notice: Undefined variable: demo in /in/dl2vc on line 11 Fatal error: Class name must be a valid object or a string in /in/dl2vc on line 11
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM, expecting ',' or ';' in /in/dl2vc on line 10
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_PAAMAYIM_NEKUDOTAYIM, expecting ',' or ';' in /in/dl2vc on line 10
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/dl2vc on line 3
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
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/dl2vc on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/dl2vc on line 3
Process exited with code 255.

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