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run code in 200+ php & hhvm versions
```<?php class Math { const pi = 3.14; } class CircleMath extends Math { public static function calculateArea(\$radius) { return parent::pi * pow(\$radius, 2); } } class Circle { private \$radius; private \$color; private \$coordinates; public function __construct() { \$numArgs = func_num_args(); \$this->radius = \$numArgs > 0 ? func_get_arg(0) : 1.0; \$this->color = \$numArgs > 1 ? func_get_arg(1) : 'blue'; \$this->coordinates = \$numArgs > 2 ? func_get_arg(2) : array('x' => 1, 'y' => 1); } public function calculateArea() { return CircleMath::calculateArea(\$this->radius); } public function get_radius() { return \$this->radius; } public function get_color() { return \$this->color; } public function get_coordinates() { return \$this->coordinates; } } \$className = 'Circle'; \$circle = new \$className(); print sprintf('The area of %s circle with radius %s and center positioned in (%s, %s) is: %s', \$circle->get_color(), \$circle->get_radius(), \$circle->get_coordinates()['x'], \$circle->get_coordinates()['y'], \$circle->calculateArea()); ?>```
Output for 5.4.0 - 5.6.30, hhvm-3.10.1 - 3.17.3, 7.0.0 - 7.2.0
The area of blue circle with radius 1 and center positioned in (1, 1) is: 3.14
Output for 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/8psl5 on line 48
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/8psl5 on line 48
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/8psl5 on line 3
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_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/8psl5 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/8psl5 on line 3
Process exited with code 255.