<?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 Max($a,$b,$c) { $a = $this->Max($a,$b); return $this->Max($a,$c); } } $math = new Math(); echo "最大值是 ".$math->Max(99,100,88); ?>
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