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<?php class test { private $_cpt ; public function compt() { $_cpt ++; return $_cpt; } } $insta1 = new test(); // Un $insta2 = new test(); // 2 echo 'cpt : '. $insta1->compt();
Output for 5.0.4 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: _cpt in /in/pXtGj on line 7 cpt : 1
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.0.3
Notice: Undefined variable: _cpt in /in/pXtGj on line 7 cpt : 1
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/pXtGj on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/pXtGj on line 4
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/pXtGj on line 4
Process exited with code 255.