今天用到一个公共函数，但是 这个函数 有的地方参数只要两个，有的需要三个参数，经过分析，如下代码： ?php function f($a,$b){ $a=45; $b=64; $c=$a$b; return $c; } $x=0;$y=0; echo f($x,$y,true,'34',45); echo br; echo $x.'and'.$y; ? 以上输出 109 4
今天用到一个公共函数，但是 这个函数 有的地方参数只要两个，有的需要三个参数，经过分析，如下代码：
function f(&$a,&$b){
$a=45;
$b=64;
$c=$a+$b;
return $c;
}
$x=0;$y=0;
echo f($x,$y,true,'34',45);
echo "
";
echo $x.'and'.$y;
?>
以上输出
109
45and64
总结：
函数调用，参数的个数可以大于声明函数的参数个数，结果不受影响；
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