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<?php class Math{ //两个数值比较大小. public function Max($a,$b) { return $a>$b?$a:$b; } //三个数值比较大小. public function Max3($a,$b,$c) { $a = $this->Max($a,$b); return $this->Max3($a,$c); } } $math = new Math(); echo "最大值是 ".$math->Max3(99,100,88); ?>
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught ArgumentCountError: Too few arguments to function Math::Max3(), 2 passed in /in/hTamd on line 12 and exactly 3 expected in /in/hTamd:9 Stack trace: #0 /in/hTamd(12): Math->Max3(100, 88) #1 /in/hTamd(16): Math->Max3(100, 100, 88) #2 {main} thrown in /in/hTamd on line 9
Process exited with code 255.

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