zoukankan      html  css  js  c++  java
  • PassArrayByCopy_test.php

    <?php
    //PassArrayByCopy_test.php
    $a=array("a","b","c");
    function test(array $p)
    {
        $len=count($p);
        for($i=0;$i<$len;$i++)
        {
            $p[$i]='Ex~' . $p[$i];
        }
        echo 'in function test:<br>';
        var_dump($p);
        echo 'leave function test.<br>';
    }
    
    var_dump($a);
    test($a);
    var_dump($a);
    echo '<hr>';
    function test2()
    {
        global $a;
        $len=count($a);
        for($i=0;$i<$len;$i++)
        {
            $a[$i]='Ex~' . $a[$i];
        }
        echo 'in function test2:<br>';
        var_dump($a);
        echo 'leave function test2.<br>';
    }
    
    test2();
    var_dump($a);
    
    ?>
    array (size=3)
      0 => string 'a' (length=1)
      1 => string 'b' (length=1)
      2 => string 'c' (length=1)
    in function test:
    array (size=3)
      0 => string 'Ex~a' (length=4)
      1 => string 'Ex~b' (length=4)
      2 => string 'Ex~c' (length=4)
    leave function test.
    array (size=3)
      0 => string 'a' (length=1)
      1 => string 'b' (length=1)
      2 => string 'c' (length=1)
    in function test2:
    array (size=3)
      0 => string 'Ex~a' (length=4)
      1 => string 'Ex~b' (length=4)
      2 => string 'Ex~c' (length=4)
    leave function test2.
    array (size=3)
      0 => string 'Ex~a' (length=4)
      1 => string 'Ex~b' (length=4)
      2 => string 'Ex~c' (length=4)
    array (size=3)
      0 => 

    string

     'a' (length=1)
      1 => 

    string

     'b' (length=1)
      2 => 

    string

     'c' (length=1)
    

    in function test:

    array (size=3)
      0 => 

    string

     'Ex~a' (length=4)
      1 => 

    string

     'Ex~b' (length=4)
      2 => 

    string

     'Ex~c' (length=4)
    

    leave function test.

    array (size=3)
      0 => 

    string

     'a' (length=1)
      1 => 

    string

     'b' (length=1)
      2 => 

    string

     'c' (length=1)
    

    in function test2:

    array (size=3)
      0 => 

    string

     'Ex~a' (length=4)
      1 => 

    string

     'Ex~b' (length=4)
      2 => 

    string

     'Ex~c' (length=4)
    

    leave function test2.

    array (size=3)
      0 => 

    string

     'Ex~a' (length=4)
      1 => 

    string

     'Ex~b' (length=4)
      2 => 

    string

     'Ex~c' (length=4)
  • 相关阅读:
    Python 中的map函数,filter函数,reduce函数
    编程中,static的用法详解
    C++ list容器系列功能函数详解
    python中的configparser类
    310实验室OTL问题----将写好的C++文件转换成Python文件,并将数据可视化
    310实验室OTL问题
    常量指针、指针常量、指向常量的指针常量
    Iterator迭代器的相关问题
    struts2中action中的通配符
    struts2访问servlet API
  • 原文地址:https://www.cnblogs.com/sky20080101/p/7076818.html
Copyright © 2011-2022 走看看