php操作数组讨论篇

<?php

 //1.判断该集合中是否有某个字符串
 $namesArrays = array("AAAAAAA","BBBBBBBB","CCCCCCCCCC","DDDDDDDDD");
 $lookingFor  ="AAAAAAA";
 if(in_array($lookingFor,$namesArrays))
 {
  echo "内容！";

 }else
 {
  echo "没有数据";
 }
 
 //2.判断该数组中有多少元素
 $count  = count($namesArrays);
 echo "集合数量:".$count."<br/>";

 //3.向集合中添加元素,默认的情况下会把元素添加到集合的最后
 echo "<span style='color:red'>3.集合中添加元素</span><br/>";
 array_push($namesArrays,"LONGJIE");
 while(list($key,$value)=each($namesArrays))
 {
  echo $key.":".$value."<br/>";
 }
 
 echo "<span style='color:red'>4.数组的最前面添加元素</span><br/>";
 //4.在数组的最前面添加元素
 array_unshift($namesArrays,"AAAAAAAAAAAAAAA");
 while(list($k,$v)=each($namesArrays))
 {
  echo $k.":".$v."<br/>";
 }

 echo "<span style='color:red'>5.两个数组合并</span><br/>";
 $array1 = array("red","blue","yellow");
 $array2 = array("10001","10002","10003");
 $mergearray =  array_merge($array1,$array2);
 while(list($key,$val)=each($mergearray))
 {
  echo $key.":".$val."<br/>" ;
 }
 
   echo "<span style='color:red'>6.删除数组中最后元素</span><br/>";
   $arraypops  = array("1001","1002","1003","1004","1005");
   $arraypoped =array_pop($arraypops);
   while(list($key,$val)=each($arraypops))
   {
    echo $key.":".$val."<br/>";
   }
   echo "已删除元素:$arraypoped<br/>";

   echo "<span style='color:red'>6.删除数组中第一元素</span><br/>";
   $arrayshifts = array("张三","李四","王武");
   echo "<span style='color:red'>/*****************原来*****************/</span><br/>";
   while(list($key,$val)=each($arrayshifts))
   {
    echo $key.":".$val."<br/>";
   }
   $arrayshifted = array_shift($arrayshifts);
   echo "<span style='color:red'>/*****************现在*****************/</span><br/>";
   while(list($key,$val)=each($arrayshifts))
   {
    echo "删除:".$key.":".$val."<br/>";
   }
   echo "删除的元素$arrayshifted<br/>";
   echo "<span style='color:red'>7.数组排序</span><br/>";

   $fruitArray = array("apple", "orange", "banana", "kiwi", "pear");
 /* 对数组进行排序*/
   sort($fruitArray);
 /*显示每个元素及其序号*/
    while (list($key,$value) = each($fruitArray))
 {
  echo "$key : $value<br>";
 }
 /*****排序*******/
 $a = array("apple", "orange", "banana", "kiwi", "pear");
 //排序
 sort($a);
 /* 对数组进行排序*/
 foreach ($a as $k)
 {
  //echo $a[$k]."=>".$v."<br />";
  echo $k."<br/>";
 }

?>

直接运行复制运行即可。