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<?php class Bar{} $bars = [new Bar, new Bar, new Bar]; $ints = [1, 2, 3]; // php 5.6 style function foo(Bar ...$bars) { echo "Got " . count($bars) . " bars.\n"; } foo(...$bars); // fatal error foo(...$ints); // without variadics function oldFoo($bars) { foreach ($bars as $bar) { if (!$bar instanceof Bar) { throw new InvalidArgumentException("Must be a Bar."); } } echo "Got " . count($bars) . " bars.\n"; } oldFoo($bars); // InvalidArgumentException oldFoo($ints);
Output for git.master, git.master_jit, rfc.property-hooks
Got 3 bars. Fatal error: Uncaught TypeError: foo(): Argument #1 must be of type Bar, int given, called in /in/Y26IV on line 16 and defined in /in/Y26IV:8 Stack trace: #0 /in/Y26IV(16): foo(1, 2, 3) #1 {main} thrown in /in/Y26IV on line 8
Process exited with code 255.

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