<?php

/*

implode() 把数组组合成字符串

explode() 把字符串分割成数组

in_array() 检测内容是否在数组中

each()把数组元素拆分成新的数组

list() 把数组元素赋值给变量

echo "<pre>";

$arr = array("PHP课程","DIVCSS课程","JQUERY","JAVASCRIPT");

$str = implode(",",$arr);

echo $str;

*/

echo "<pre>";

$file=array('/uploads/a1.jpg','/uploads/a2.jpg','/uploads/a3.jpg');

$files = implode(',', $file);

echo $files;

$arr2 = explode(',', $files);

print_r($arr2);

/*

$files = implode(',',$file);

echo $files."<br/>";

$arr2 = explode(',',$files);

print_r($arr2);

$arr3 = array(1,2,3,4,5);

var_dump(in_array('1',$arr3));

*/

/*

$arr4 = array("url"=>"bbs.houdunwang.com","webname"=>"后盾网论坛");

$arr4_1 = each($arr4);

print_r($arr4_1);

$arr4_1 = each($arr4);

print_r($arr4_1);

var_dump(each($arr4));

*/

/*

$arr5 = array("url"=>"bbs.houdunwang.com","webname"=>"后盾网视频教程","class1"=>"PHP","class2"=>"DIVCSS");

while(list($k,$v) = each($arr5)){

echo $k."=>".$v;

echo "<br/>";

}

*/