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implode()    
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         Óï·¨:implode(separator,array)
               
separator
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array
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                     eg:
                        <?php>
                                   $arr = array('Hello','World!','Beautiful','Day!');
                                   echo implode(" ",$arr)
;
                        ?>
                        Êä³ö£º     Hello World! Beautiful Day!
explode()
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<?php
$base_dir="filelist/";
$fso=opendir($base_dir);
echo  $base_dir."<hr/>";
whil ......

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Code:
<?php
function genRandomString($len)
{
$chars = array(
"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", 
"l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", 
"w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G", 
"H", "I", "J", "K", "L", "M", "N", "O", ......

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<?php
//RSSÔ´µØÖ·ÁбíÊý×é
$rssfeed = array("http://blog.csdn.net/heavenopener/category/668064.aspx/rss");
for($i=0;$i<sizeof($rssfee ......

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<?php
/**
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