Home > php教程 > php手册 > php函数的引用参数及参数个数

php函数的引用参数及参数个数

WBOY
Release: 2016-06-06 20:02:22
Original
1893 people have browsed it

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;



Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Recommendations
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template