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<?php function bool2str($bool) { if ($bool === false) { return 'FALSE'; } else { return 'TRUE'; } } function compareObjects(&$o1, &$o2) { echo 'o1 == o2 : ' . bool2str($obj1->equals($obj2)) . "\n"; echo 'o1 != o2 : ' . bool2str($obj1 instanceof $obj2) . "\n"; } class Flag { public $flag; function Flag($flag = true) { $this->flag = $flag; } } class OtherFlag { public $flag; function OtherFlag($flag = true) { $this->flag = $flag; } } $o = new Flag(); $p = new Flag(); $q = $o; $r = new OtherFlag(); echo "Два экземпляра одного и того же класса\n"; compareObjects($o, $p); echo "\nДве ссылки на один и тот же экземпляр\n"; compareObjects($o, $q); echo "\nЭкземпляры двух разных классов\n"; compareObjects($o, $r);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Два экземпляра одного и того же класса Warning: Undefined variable $obj1 in /in/PA16c on line 13 Fatal error: Uncaught Error: Call to a member function equals() on null in /in/PA16c:13 Stack trace: #0 /in/PA16c(41): compareObjects(Object(Flag), Object(Flag)) #1 {main} thrown in /in/PA16c on line 13
Process exited with code 255.
Output for 7.0.5 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Flag has a deprecated constructor in /in/PA16c on line 17 Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; OtherFlag has a deprecated constructor in /in/PA16c on line 26 Два экземпляра одного и того же класса Notice: Undefined variable: obj1 in /in/PA16c on line 13 Fatal error: Uncaught Error: Call to a member function equals() on null in /in/PA16c:13 Stack trace: #0 /in/PA16c(41): compareObjects(Object(Flag), Object(Flag)) #1 {main} thrown in /in/PA16c on line 13
Process exited with code 255.
Output for 7.3.32 - 7.3.33
Два экземпляра одного и того же класса Fatal error: Uncaught Error: Call to a member function equals() on null in /in/PA16c:13 Stack trace: #0 /in/PA16c(41): compareObjects(Object(Flag), Object(Flag)) #1 {main} thrown in /in/PA16c on line 13
Process exited with code 255.
Output for 7.0.0 - 7.0.4
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Flag has a deprecated constructor in /in/PA16c on line 17 Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; OtherFlag has a deprecated constructor in /in/PA16c on line 26 Два экземпляра одного и того же класса Notice: Undefined variable: obj1 in /in/PA16c on line 13 Fatal error: Uncaught Error: Call to a member function equals() on unknown in /in/PA16c:13 Stack trace: #0 /in/PA16c(41): compareObjects(Object(Flag), Object(Flag)) #1 {main} thrown in /in/PA16c on line 13
Process exited with code 255.
Output for 5.6.7 - 5.6.28
Два экземпляра одного и того же класса Notice: Undefined variable: obj1 in /in/PA16c on line 13 Fatal error: Call to a member function equals() on null in /in/PA16c on line 13
Process exited with code 255.
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35
Два экземпляра одного и того же класса Notice: Undefined variable: obj1 in /in/PA16c on line 13 Fatal error: Call to a member function equals() on a non-object in /in/PA16c on line 13
Process exited with code 255.
Output for 5.0.0 - 5.0.3
Два экземпляра одного и того же класса Notice: Undefined variable: obj1 in /in/PA16c on line 13 Fatal error: Call to a member function equals() on a non-object in /in/PA16c on line 13
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/PA16c on line 14
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 in /in/PA16c on line 14
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/PA16c on line 14
Process exited with code 255.
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