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<?xml version="1.0" encoding="UTF-8" standalone="no"?>

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<a xmlns="" href="mailto:netkiller@msn.com">Email</a><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">3.2. Array 数组</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="index.html">上一页</a> </td><th width="60%" align="center">第 3 章 Function Reference</th><td width="20%" align="right"> <a accesskey="n" href="get_loaded_extensions.html">下一页</a></td></tr></table><hr /></div><table xmlns=""><tr><td><iframe src="//ghbtns.com/github-btn.html?user=netkiller&repo=netkiller.github.io&type=watch&count=true&size=large" height="30" width="170" frameborder="0" scrolling="0" style="width:170px; height: 30px;" allowTransparency="true"></iframe></td><td><iframe src="//ghbtns.com/github-btn.html?user=netkiller&repo=netkiller.github.io&type=fork&count=true&size=large" height="30" width="170" frameborder="0" scrolling="0" style="width:170px; height: 30px;" allowTransparency="true"></iframe></td><td><iframe src="//ghbtns.com/github-btn.html?user=netkiller&type=follow&count=true&size=large" height="30" width="240" frameborder="0" scrolling="0" style="width:240px; height: 30px;" allowTransparency="true"></iframe></td></tr></table><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="php.array"></a>3.2. Array 数组</h2></div></div></div>

<p>数据相关函数</p>

<div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="idp18"></a>3.2.1. 删除数组元素</h3></div></div></div>

$a[]="a1";

$a[]="a2";

$a[]="a3";

print_r($a);

unset($a[1]);

print_r($a);

</pre>

</div>

<div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="idp19"></a>3.2.2. 数组与字符串操作</h3></div></div></div>

<p>implode(separator,array)</p>

<?php

$arr = array('Hello','World!');

echo implode(" ",$arr);

</pre>

<p>explode(separator,string,limit)</p>

<?php

$str = "Hello world!";

print_r (explode(" ",$str));

</pre>

</div>

<div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="iconv"></a>3.2.3. iconv</h3></div></div></div>

$str = iconv('UTF-8', 'GB2312', unescape(isset($_GET['str'])? $_GET['str']:''));

报错：iconv() : Detected an illegal character in input string

//TRANSLIT 会自动将不能直接转化的字符变成一个或多个近似的字符，

//IGNORE 会忽略掉不能转化的字符，而默认效果是从第一个非法字符截断。

$str = iconv('UTF-8', 'GBK//IGNORE', unescape(isset($_GET['str'])? $_GET['str']:''));

</pre>

$content = iconv("GBK", "UTF-8", $content);

$content = mb_convert_encoding($content, "UTF-8", "GBK");

</pre>

</div>

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