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run code in 200+ php & hhvm versions
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<?php declare(strict_types=1); function double(int $value) { return 2 * $value; } function coerceInt(string $value) : int { return (int)$value; } $a = double(coerceInt("5")); var_dump($a);
based on dONJL
Output for 7.0.0 - 7.2.0
int(10)
Output for 5.3.19 - 5.6.28
Warning: Unsupported declare 'strict_types' in /in/QJjIh on line 3 Parse error: syntax error, unexpected ':', expecting '{' in /in/QJjIh on line 9
Process exited with code 255.