php数组使用小结_PHP教程

   1: <?php

   2: $dwqs[0] = "1“;

   3: $dwqs[1] = "我的博客:";

   4: $dwqs[2] = "www.ido321.com";

   5: $dwqs[3] = "程序爱好者:";

   6: $dwqs[4] = "QQ群：259280570";

   7: $dwqs[5] = "欢迎你的加入";

   8: ?>

   1: <?php

   2: $dwqs = array(1,"我的博客","www.ido321.com","程序爱好者:","QQ群：259280570","欢迎你的加入");

   3: ?>

   1: <?php

   2: $dwqs1= array(

   3:     "编号" => array(1,2,3),

   4:     "博客" => array("独立博客","CSDN","博客园"),

   5:     "地址" => array("www.ido321.com","blog.csdn.net/u011043843","www.cnblogs.com/ido321")  

   6: ?>

   1: <?php

   2: for($i = 0; $i < count($dwqs); $i&#43;&#43;){

   3:     echo "$dwqs[i]<br/>";

   4: ?>

   1: //第一种方式

   2: <?php

   3: foreach($dwqs as $value){

   4:     echo "$value<br/>";

   5: ?>

   6:  

   7: //第二种方式

   8: <?php

   9: foreach($dwqs1 as $key=>$value){

  10:     echo $key."=>".$value;

  11: ?>

   1: <?php

   2: while(list($key,$value) = each($dwqs1)){

   3:     echo $key.":".$value;

   4: ?>

   1: <?php

   2: $dwqs2 = array("ID" => 1,"博客" => "www.ido321.com","程序爱好者" => "QQ群：259280570");

   3: //输出：Array([0]=>1,[1]=>www.ido321.com,[2]=>QQ群：259280570)

   4: print_r(array_values($dwqs2));

   5: //输出：array("ID" => 1,"博客" => "www.ido321.com","程序爱好者" => "QQ群：259280570");

   6: print_r($dwqs2);

   7:  

   8: ?>

   1: <?php

   2: //输出所有键名：Array([0]=>ID，[1]=>博客,[2]=>程序爱好者);

   3: print_r(array_keys($dwqs2)) 

   4: //输出指定键名：Array([0]=>ID)

   5: print_r(array_kays($dqws,'ID'));

   6: ?>

   1: <?php

   2: $address = "www.ido321.com";

   3: //输出：存在

   4: if(in_array($address,$dwqs2)){

   5:     echo "存在";

   6: }

   7: else{

   8:     echo "不存在";

   9: }

  10: ?>

   1: <?php

   2:     echo count($dwqs2);

   3: ?>

   1: <?php

   2: $a = array('a' => 'php','b' => 'mysql','c' => 'linux','d' => 'php');

   3: //输出：array('a' => 'php','b' => 'mysql','c' => 'linux);

   4: print_r(array_unique($a));

   5: ?>

   1: <?php

   2: //输出：Array(php => 2,mysql => 1,linux => 1)

   3: print_r(array_count_values($a));

   4: ?>