随着时代的发展，我们的编程技术也越来越多，对于php想必大家都很了解吧，我们这里就介绍一下php数组吧。php数组是最常见的批量数据存储结构，由于数组采用顺序存储，所以可以方便的进行随机存储。在很多语言中，数组都是静态的，必须在使用前指定数组的长度，而在php中，你完全不用操心这个问题，数组是完全动态的。你甚至可以这样来使用一个数组。
<OL class=dp-xml><LI class=alt><SPAN><SPAN>PHP CODE </SPAN></SPAN><LI class=""><SPAN>// DEMO of Array </SPAN><LI class=alt><SPAN>demo_array[] = 1; </SPAN><LI class=""><SPAN>demo_array[] = 2; </SPAN></LI></OL>
然后，我们来模拟洗牌的过程，这实际上是若干次的两张牌交换的过程。我们产生两个在1~108之间的随机数，然后交换以这两个数为index的数组元素的值就可以了。因为要多次交换，我们可以把这个过程定义为一个函数。接着，就是把这108张牌分给4个人，实际上，只要前边的交换次数足够大，直接切成5份就OK了。不过为了更好的模拟现实和表现数组的特性，我们采用循环的方式来分发。就是每个人一次四张，然后一个人一张，庄家两张。好了，整个过程就是这样的了。下边我们通过程序来说明一些更为细节的东西。
<OL class=dp-xml><LI class=alt><SPAN><SPAN>PHP CODE </SPAN></SPAN><LI class=""><SPAN></SPAN><STRONG><FONT color=#006699><SPAN class=tag><?</SPAN><SPAN class=tag-name>php</SPAN></FONT></STRONG><SPAN> </SPAN></SPAN><LI class=alt><SPAN>/** ************************************************************ </SPAN><LI class=""><SPAN>* 一个使用数组来模拟麻将洗牌和发牌过程的例子 </SPAN><LI class=alt><SPAN>* @ Easy@bjpeu.edu.cn </SPAN><LI class=""><SPAN>* @ 2003-6-3 </SPAN><LI class=alt><SPAN>** *************************************************************/ </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>// 换牌函数 </SPAN><LI class=""><SPAN>function swap() </SPAN><LI class=alt><SPAN>{ </SPAN><LI class=""><SPAN>// 将$majiangArray定义为全局变量 </SPAN><LI class=alt><SPAN>// 这样可以在函数中进行操作 </SPAN><LI class=""><SPAN>global $majiangArray; </SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN>// 产生两个1到108的随机数 </SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>index1</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>rand</FONT></SPAN><SPAN>( 1 , 108 ); </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>index2</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>rand</FONT></SPAN><SPAN>( 1 , 108 ); </SPAN></SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN>// 交换相应的数组元素的值 </SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>tmp</FONT></SPAN><SPAN> = $majiangArray[ $index1 ]; </SPAN></SPAN><LI class=""><SPAN>$majiangArray[ $index1 ] = $majiangArray[ $index2 ]; </SPAN><LI class=alt><SPAN>$majiangArray[ $index2 ] = $tmp; </SPAN><LI class=""><SPAN>} </SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN>// 将数组的内容用相应的图片表示出来的函数 </SPAN><LI class=alt><SPAN>function showArray( $arrayName ) </SPAN><LI class=""><SPAN>{ </SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>count</FONT></SPAN><SPAN class=attribute-value><FONT color=#0000ff>count</FONT></SPAN><SPAN> = count ( $arrayName ); </SPAN></SPAN><LI class=""><SPAN>for ( $</SPAN><SPAN class=attribute><FONT color=#ff0000>i</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>0</FONT></SPAN><SPAN> ; $i </SPAN><SPAN class=tag><STRONG><FONT color=#006699><</FONT></STRONG></SPAN><SPAN> $count ; $i++ ) </SPAN></SPAN><LI class=alt><SPAN>{ </SPAN><LI class=""><SPAN>echo '</SPAN><STRONG><FONT color=#006699><SPAN class=tag><</SPAN><SPAN class=tag-name>img</SPAN></FONT></STRONG><SPAN> </SPAN><SPAN class=attribute><FONT color=#ff0000>src</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>"img/'. $arrayName[ $i ] .'"</FONT></SPAN><SPAN class=tag><STRONG><FONT color=#006699>></FONT></STRONG></SPAN><SPAN> ';//显示相应的图片 </SPAN></SPAN><LI class=alt><SPAN>} </SPAN><LI class=""><SPAN>echo '</SPAN><STRONG><FONT color=#006699><SPAN class=tag><</SPAN><SPAN class=tag-name>p</SPAN><SPAN class=tag>></SPAN></FONT></STRONG><SPAN>';//换行 </SPAN></SPAN><LI class=alt><SPAN>} </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>// 主程序部分开始 </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>// 初始化数组 </SPAN><LI class=""><SPAN>unset( $majiangArray ); </SPAN><LI class=alt><SPAN>$majiangArray[] = '0'; // 数据从1开始存放，跳过0 </SPAN><LI class=""><SPAN>for ( $</SPAN><SPAN class=attribute><FONT color=#ff0000>i</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>1</FONT></SPAN><SPAN> ; $i </SPAN><SPAN class=tag><STRONG><FONT color=#006699><</FONT></STRONG></SPAN><SPAN>= 3 ; $i++ )// 共有三种花色 </SPAN></SPAN><LI class=alt><SPAN>{ </SPAN><LI class=""><SPAN>for ( $</SPAN><SPAN class=attribute><FONT color=#ff0000>j</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>1</FONT></SPAN><SPAN> ; $j </SPAN><SPAN class=tag><STRONG><FONT color=#006699><</FONT></STRONG></SPAN><SPAN>= 9 ; $j++ )// 一个花色中有九种牌 </SPAN></SPAN><LI class=alt><SPAN>{ </SPAN><LI class=""><SPAN>for ( $</SPAN><SPAN class=attribute><FONT color=#ff0000>k</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>1</FONT></SPAN><SPAN> ; $k </SPAN><SPAN class=tag><STRONG><FONT color=#006699><</FONT></STRONG></SPAN><SPAN>= 4 ; $k++ )// 每种牌有四张 </SPAN></SPAN><LI class=alt><SPAN>{ </SPAN><LI class=""><SPAN>$majiangArray[] = $i . '_' . $j . '.gif'; </SPAN><LI class=alt><SPAN>} </SPAN><LI class=""><SPAN>} </SPAN><LI class=alt><SPAN>} </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>// 开始洗牌 </SPAN><LI class=""><SPAN>for ( $</SPAN><SPAN class=attribute><FONT color=#ff0000>i</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>1</FONT></SPAN><SPAN> ; $i </SPAN><SPAN class=tag><STRONG><FONT color=#006699><</FONT></STRONG></SPAN><SPAN>= 1000 ; $i ++ )// 循环变量i被重新赋值重用 </SPAN></SPAN><LI class=alt><SPAN>{ </SPAN><LI class=""><SPAN>swap(); </SPAN><LI class=alt><SPAN>} </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>// 初始化四个用户 </SPAN><LI class=""><SPAN>unset( $user1 ); </SPAN><LI class=alt><SPAN>unset( $user2 ); </SPAN><LI class=""><SPAN>unset( $user3 ); </SPAN><LI class=alt><SPAN>unset( $user4 ); </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>// $seek是进度指针，纪录当前应该从那里发牌 </SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>seek</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>1</FONT></SPAN><SPAN>; </SPAN></SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN>for ( $</SPAN><SPAN class=attribute><FONT color=#ff0000>i</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>1</FONT></SPAN><SPAN> ; $i </SPAN><SPAN class=tag><STRONG><FONT color=#006699><</FONT></STRONG></SPAN><SPAN>= 3 ; $i++ )// 总共摸三次四张的 </SPAN></SPAN><LI class=alt><SPAN>{ </SPAN><LI class=""><SPAN>for ( $</SPAN><SPAN class=attribute><FONT color=#ff0000>j</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>1</FONT></SPAN><SPAN> ; $j </SPAN><SPAN class=tag><STRONG><FONT color=#006699><</FONT></STRONG></SPAN><SPAN>= 4 ; $j++ )// 四个人 </SPAN></SPAN><LI class=alt><SPAN>{ </SPAN><LI class=""><SPAN>for ( $</SPAN><SPAN class=attribute><FONT color=#ff0000>k</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>1</FONT></SPAN><SPAN> ; $k </SPAN><SPAN class=tag><STRONG><FONT color=#006699><</FONT></STRONG></SPAN><SPAN>= 4 ; $k++ )// 一次四张 </SPAN></SPAN><LI class=alt><SPAN>{ </SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>name</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>'user'</FONT></SPAN><SPAN>.$j; </SPAN></SPAN><LI class=alt><SPAN>${$name}[] = $majiangArray[ $seek++ ]; </SPAN><LI class=""><SPAN>} </SPAN><LI class=alt><SPAN>} </SPAN><LI class=""><SPAN>} </SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN>// 然后一人一张 </SPAN><LI class=alt><SPAN>for ( $</SPAN><SPAN class=attribute><FONT color=#ff0000>i</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>1</FONT></SPAN><SPAN> ; $i </SPAN><SPAN class=tag><STRONG><FONT color=#006699><</FONT></STRONG></SPAN><SPAN>= 4 ; $i++ ) </SPAN></SPAN><LI class=""><SPAN>{ </SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>name</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>'user'</FONT></SPAN><SPAN>.$i; </SPAN></SPAN><LI class=""><SPAN>${$name}[] = $majiangArray[ $seek++ ]; </SPAN><LI class=alt><SPAN>} </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>// 最后庄家多摸一张 </SPAN><LI class=""><SPAN>$user4[] = $majiangArray[ $seek ]; </SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN>// 分牌结束 显示结果 </SPAN><LI class=alt><SPAN>showArray( $user1 ); </SPAN><LI class=""><SPAN>showArray( $user2 ); </SPAN><LI class=alt><SPAN>showArray( $user3 ); </SPAN><LI class=""><SPAN>showArray( $user4 ); </SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN></SPAN><SPAN class=tag><STRONG><FONT color=#006699>?></FONT></STRONG></SPAN><SPAN> </SPAN></SPAN></LI></OL>
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