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jquery php 百度搜索框智能提示效果

发布时间:2016-11-25 16:25

这个程序是利用php+ajax+jquery 实现的一个仿baidu智能提示的效果,有需要的朋友可以下载测试哦。

先来看看效果

代码如下

index.html文件,保保存成index.htm

 代码如下 复制代码

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Ajax Auto Suggest</title>

<script type="text/网页特效"" width=100% src="jquery-1.2.1.pack.js"></script>
<script type="text/javascript">
 function lookup(inputString) {
  if(inputString.length == 0) {
   // Hide the suggestion box.
   $('#suggestions').hide();
  } else {
   $.post("rpc.php", {queryString: ""+inputString+""}, function(data){
    if(data.length >0) {
     $('#suggestions').show();
     $('#autoSuggestionsList').html(data);
    }
   });
  }
 } // lookup
 
 function fill(thisValue) {
  $('#inputString').val(thisValue);
  setTimeout("$('#suggestions').hide();", 200);
 }
</script>

<style type="text/css教程">
 body {
  font-family: Helvetica;
  font-size: 11px;
  color: #000;
 }
 
 h3 {
  margin: 0px;
  padding: 0px; 
 }

 .suggestionsBox {
  position: relative;
  left: 30px;
  margin: 10px 0px 0px 0px;
  width: 200px;
  background-color: #212427;
  -moz-border-radius: 7px;
  -webkit-border-radius: 7px;
  border: 2px solid #000; 
  color: #fff;
 }
 
 .suggestionList {
  margin: 0px;
  padding: 0px;
 }
 
 .suggestionList li {
  
  margin: 0px 0px 3px 0px;
  padding: 3px;
  cursor: pointer;
 }
 
 .suggestionList li:hover {
  background-color: #659CD8;
 }
</style>

</head>

<body>


 <div>
  <form>
   <div>
    Type your county:
    <br />
    <input type="text" size="30" value="" id="inputString" onkeyup="lookup(this.value);" onblur="fill();" />
   </div>
   
   <div class="suggestionsBox" id="suggestions" style="display: none;">
    <img" width=100% src="upArrow.png" style="position: relative; top: -12px; left: 30px;" alt="upArrow" />
    <div class="suggestionList" id="autoSuggestionsList">
     &nbsp;
    </div>
   </div>
  </form>
 </div>

</body>
</html>

php文件

 代码如下 复制代码

<?php
 
    mysql教程_connect('localhost', 'root' ,'root');
 mysql_select_db("autoComplete"); 
 
 $queryString = $_POST['queryString'];
   
   if(strlen($queryString) >0) {
    $sql= "SELECT value FROM countries WHERE value LIKE '".$queryString."%' LIMIT 10";
    $query = mysql_query($sql);
    while ($result = mysql_fetch_array($query,MYSQL_BOTH)){    
     $value=$result['value'];
     echo '<li onClick="fill(''.$value.'');">'.$value.'</li>';
    }

   }
 
?>

sql.sql把这里复制保存到你的数据库教程

 代码如下 复制代码

-- phpMyAdmin SQL Dump
-- version 3.3.5
-- http://www.phpmyadmin.net
--
-- 主机: localhost
-- 生成日期: 2010 年 12 月 09 日 02:36
-- 服务器版本: 5.0.22
-- PHP 版本: 5.2.14

SET SQL_MODE="NO_AUTO_VALUE_ON_ZERO";


/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;

--
-- 数据库: `autoComplete`
--

-- --------------------------------------------------------

--
-- 表的结构 `countries`
--

CREATE TABLE IF NOT EXISTS `countries` (
  `id` int(6) NOT NULL auto_increment,
  `value` varchar(250) NOT NULL default '',
  PRIMARY KEY  (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=243 ;

--
-- 转存表中的数据 `countries`
--

INSERT INTO `countries` (`id`, `value`) VALUES
(1, 'Afghanistan'),
(2, 'Aringland Islands'),
(3, 'Albania'),
(4, 'Algeria'),
(5, 'American Samoa'),
(6, 'Andorra'),
(7, 'Angola'),
(8, 'Anguilla'),
(9, 'Antarctica'),
(10, 'Antigua and Barbuda'),
(11, 'Argentina'),
(12, 'Armenia'),
(13, 'Aruba'),
(14, 'Australia'),
(15, 'Austria'),
(16, 'Azerbaijan'),
(17, 'Bahamas'),
(18, 'Bahrain'),
(19, 'Bangladesh'),
(20, 'Barbados'),
(21, 'Belarus'),
(22, 'Belgium'),
(23, 'Belize'),
(24, 'Benin'),
(25, 'Bermuda'),
(26, 'Bhutan'),
(27, 'Bolivia'),
(28, 'Bosnia and Herzegovina'),
(29, 'Botswana'),
(30, 'Bouvet Island'),
(31, 'Brazil'),
(32, 'British Indian Ocean territory'),
(33, 'Brunei Darussalam'),
(34, 'Bulgaria'),
(35, 'Burkina Faso'),
(36, 'Burundi'),
(37, 'Cambodia'),
(38, 'Cameroon'),
(39, 'Canada'),
(40, 'Cape Verde'),
(41, 'Cayman Islands'),
(42, 'Central African Republic'),
(43, 'Chad'),
(44, 'Chile'),
(45, 'China'),
(46, 'Christmas Island'),
(47, 'Cocos (Keeling) Islands'),
(48, 'Colombia'),
(49, 'Comoros'),
(50, 'Congo'),
(51, 'Congo'),
(52, ' Democratic Republic'),
(53, 'Cook Islands'),
(54, 'Costa Rica'),
(55, 'Ivory Coast (Ivory Coast)'),
(56, 'Croatia (Hrvatska)'),
(57, 'Cuba'),
(58, 'Cyprus'),
(59, 'Czech Republic'),
(60, 'Denmark'),
(61, 'Djibouti'),
(62, 'Dominica'),
(63, 'Dominican Republic'),
(64, 'East Timor'),
(65, 'Ecuador'),
(66, 'Egypt'),
(67, 'El Salvador'),
(68, 'Equatorial Guinea'),
(69, 'Eritrea'),
(70, 'Estonia'),
(71, 'Ethiopia'),
(72, 'Falkland Islands'),
(73, 'Faroe Islands'),
(74, 'Fiji'),
(75, 'Finland'),
(76, 'France'),
(77, 'French Guiana'),
(78, 'French Polynesia'),
(79, 'French Southern Territories'),
(80, 'Gabon'),
(81, 'Gambia'),
(82, 'Georgia'),
(83, 'Germany'),
(84, 'Ghana'),
(85, 'Gibraltar'),
(86, 'Greece'),
(87, 'Greenland'),
(88, 'Grenada'),
(89, 'Guadeloupe'),
(90, 'Guam'),
(91, 'Guatemala'),
(92, 'Guinea'),
(93, 'Guinea-Bissau'),
(94, 'Guyana'),
(95, 'Haiti'),
(96, 'Heard and McDonald Islands'),
(97, 'Honduras'),
(98, 'Hong Kong'),
(99, 'Hungary'),
(100, 'Iceland'),
(101, 'India'),
(102, 'Indonesia'),
(103, 'Iran'),
(104, 'Iraq'),
(105, 'Ireland'),
(106, 'Israel'),
(107, 'Italy'),
(108, 'Jamaica'),
(109, 'Japan'),
(110, 'Jordan'),
(111, 'Kazakhstan'),
(112, 'Kenya'),
(113, 'Kiribati'),
(114, 'Korea (north)'),
(115, 'Korea (south)'),
(116, 'Kuwait'),
(117, 'Kyrgyzstan'),
(118, 'Lao People''s Democratic Republic'),
(119, 'Latvia'),
(120, 'Lebanon'),
(121, 'Lesotho'),
(122, 'Liberia'),
(123, 'Libyan Arab Jamahiriya'),
(124, 'Liechtenstein'),
(125, 'Lithuania'),
(126, 'Luxembourg'),
(127, 'Macao'),
(128, 'Macedonia'),
(129, 'Madagascar'),
(130, 'Malawi'),
(131, 'Malaysia'),
(132, 'Maldives'),
(133, 'Mali'),
(134, 'Malta'),
(135, 'Marshall Islands'),
(136, 'Martinique'),
(137, 'Mauritania'),
(138, 'Mauritius'),
(139, 'Mayotte'),
(140, 'Mexico'),
(141, 'Micronesia'),
(142, 'Moldova'),
(143, 'Monaco'),
(144, 'Mongolia'),
(145, 'Montserrat'),
(146, 'Morocco'),
(147, 'Mozambique'),
(148, 'Myanmar'),
(149, 'Namibia'),
(150, 'Nauru'),
(151, 'Nepal'),
(152, 'Netherlands'),
(153, 'Netherlands Antilles'),
(154, 'New Caledonia'),
(155, 'New Zealand'),
(156, 'Nicaragua'),
(157, 'Niger'),
(158, 'Nigeria'),
(159, 'Niue'),
(160, 'Norfolk Island'),
(161, 'Northern Mariana Islands'),
(162, 'Norway'),
(163, 'Oman'),
(164, 'Pakistan'),
(165, 'Palau'),
(166, 'Palestinian Territories'),
(167, 'Panama'),
(168, 'Papua New Guinea'),
(169, 'Paraguay'),
(170, 'Peru'),
(171, 'Philippines'),
(172, 'Pitcairn'),
(173, 'Poland'),
(174, 'Portugal'),
(175, 'Puerto Rico'),
(176, 'Qatar'),
(177, 'Runion'),
(178, 'Romania'),
(179, 'Russian Federation'),
(180, 'Rwanda'),
(181, 'Saint Helena'),
(182, 'Saint Kitts and Nevis'),
(183, 'Saint Lucia'),
(184, 'Saint Pierre and Miquelon'),
(185, 'Saint Vincent and the Grenadines'),
(186, 'Samoa'),
(187, 'San Marino'),
(188, 'Sao Tome and Principe'),
(189, 'Saudi Arabia'),
(190, 'Senegal'),
(191, 'Serbia and Montenegro'),
(192, 'Seychelles'),
(193, 'Sierra Leone'),
(194, 'Singapore'),
(195, 'Slovakia'),
(196, 'Slovenia'),
(197, 'Solomon Islands'),
(198, 'Somalia'),
(199, 'South Africa'),
(200, 'South Georgia and the South Sandwich Islands'),
(201, 'Spain'),
(202, 'Sri Lanka'),
(203, 'Sudan'),
(204, 'Suriname'),
(205, 'Svalbard and Jan Mayen Islands'),
(206, 'Swaziland'),
(207, 'Sweden'),
(208, 'Switzerland'),
(209, 'Syria'),
(210, 'Taiwan'),
(211, 'Tajikistan'),
(212, 'Tanzania'),
(213, 'Thailand'),
(214, 'Togo'),
(215, 'Tokelau'),
(216, 'Tonga'),
(217, 'Trinidad and Tobago'),
(218, 'Tunisia'),
(219, 'Turkey'),
(220, 'Turkmenistan'),
(221, 'Turks and Caicos Islands'),
(222, 'Tuvalu'),
(223, 'Uganda'),
(224, 'Ukraine'),
(225, 'United Arab Emirates'),
(226, 'United Kingdom'),
(227, 'United States of America'),
(228, 'Uruguay'),
(229, 'Uzbekistan'),
(230, 'Vanuatu'),
(231, 'Vatican City'),
(232, 'Venezuela'),
(233, 'Vietnam'),
(234, 'Virgin Islands (British)'),
(235, 'Virgin Islands (US)'),
(236, 'Wallis and Futuna Islands'),
(237, 'Western Sahara'),
(238, 'Yemen'),
(239, 'Zaire'),
(240, 'Zambia'),
(241, 'Zimbabwe');

 

注:里面有个jquery文件没有放上来,大家可以到http://down.111cn.net下载或者到百度搜索

大多数流行的 Web 服务如 twitter 通过开放 API 来提供数据一样,它总是能够知道如何解析 API 数据的各种传送格式,包括 JSON,XML 等等
 代码如下 复制代码
$json_string='{"id":1,"name":"foo","email":"foo@foobar.com","interest":["wordpress","php"]} ';
$obj=json_decode($json_string);
echo $obj->name;
//prints foo echo $obj->interest[1]; //prints php
由于工作需要我找了二个时间日期控制,这个不用js只要php实现的,因为要带参考查询所以操作了操作,有需要的朋友可以参考一下哦,我自己用的是第二个,所以第二个己作了修改。

<?php教程

class Calendar
{
 var $month;
 var $year;

    function __construct($year,$month)
    {
     $this->year=$year;
  $this->month=$month;
 }

 function endday()
 {
  $daydate=date("d",mktime(0,0,0,$this->month,35,$this->year));
  $endday=35-$daydate;
  return $endday;
 }
 
 function oneday_week()
 {
  $oneday_week=date("w",mktime(0,0,0,$this->month,1,$this->year));
  return $oneday_week;
 }
 
 function title_link()
 {
  if(!isset($this->month) && !isset($this->year))
  {
   $this->year  = date("Y");
   $this->month = date("m");
        }
       
 
  $lastmonth=$this->month-1;
  $nextmonth=$this->month+1;
  $lastyear=$this->year;
  $nextyear=$this->year;

        if($this->month <= 1)
        {
         $lastmonth=12;
   $nextmonth=$this->month+1;
   $lastyear=$this->year-1;
   $nextyear=$this->year;
  }
        elseif ($this->month >= 12)
        {
         $lastmonth=$this->month-1;
         $nextmonth=1;
   $lastyear=$this->year;
   $nextyear=$this->year+1;
        }

        $str ="<td colspan='2'><div align='center'><a href=$PHP_SELF?year=".$lastyear."&month=".$lastmonth."&><<<</a></div></td>";
  $str.="<td colspan='3'><div align='center'>".$this->year."--".$this->month."</div></td>";
  $str.="<td colspan='2'><div align='center'><a href=$PHP_SELF?year=".$nextyear."&month=".$nextmonth."&>>>></a></div></td>";
  return $str;
 }
 
 
 function Show_Calendar()
 {
        echo "<table width='181' border=5><tr class='tr.title'>".$this->title_link()."</tr><tr>";
        $weekarray=array("日","一","二","三","四","五","六");
       
        for($k=0;$k<=6;$k++)
        {
         echo "<td><div align='center'>".$weekarray[$k]."</div></td>";
        }
        echo "</tr>";
       
        for($i=0;$i<=5;$i++)
        {
         echo "<tr>";
         for($j=1;$j<=7;$j++)
         {
    $math=( $j - $this->oneday_week() ) + 7 * $i;
   
          echo "<td><div align='center'>";
   
          if($math <= $this->endday() and $math>=1)
    {
         echo $math;
    }
   
         echo "</div></td>";
         }   
         echo "</tr>";    
        }
  echo "</table>";
         
 }
}

/*$calendar=new Calendar($_GET['year'],$_GET['month']);
//$calendar->month=$_GET['month'];
//$calendar->year=$_GET['year'];
$calendar->Show_Calendar();*/


//第二个

?>

实例二

<?php
header("content-type:text/html;charset=utf-8");
?>
<meta http-equiv="content-type" content="text/html;charset=utf-8">

<link href="statics/css教程/zhaoshang.css" rel="stylesheet" type="text/css">
<div class="rili">
<?php
if(!empty($_GET)){
    $year = isset($_GET['year'])?$_GET['year']:date('y');
    $month = isset($_GET['month'])?$_GET['month']:date('m');
 $day = isset($_GET['day'])?$_GET['day']:date('d');
}
if(empty($year)){
    $year = date('Y');
}
if(empty($month)){
    $month = date('m');
}

if(empty($month)){
    $days = date('d');
}

$start_weekday = date('w',mktime(0,0,0,$month,1,$year));
//echo $start_weekday;
$days = date('t',mktime(0,0,0,$month,1,$year));
//echo $days;
$week = array('日','一','二','三','四','五','六');
$i = 0;
$k = 1;
$j = 0;
echo '<table >';
echo '<tr><td colspan = 7 style ="text-align:center; width:250px; background:#d5e5f6; border-bottom:1px solid #333366;">'.$year.'年'.$month.'月'.'</td></tr>';
echo '<tr>';
for($i = 0;$i < 7;$i++){
    echo '<td>'.$week[$i].'</td>';
}
echo '</tr>';
echo '<tr>';
for($j = 0;$j < $start_weekday;$j++){
    echo '<td style="color:#f1f8fc;">'.$j.'</td>';
}
while($k <= $days){
    if($k == $day){
        echo '<td style="color:red"><a href="?year='.$year.'&month='.$month.'&day='.$k.'"><span style="color:red">'.$k.'</span></a></td>';
    }else{
        echo '<td><a href="?year='.$year.'&month='.$month.'&day='.$k.'">'.$k.'</a></td>';
    }
    if(($j+1) % 7 == 0){
        echo '</tr><tr>';
    }
    $j++;
    $k++;
}
while($j % 7 != 0){
    echo '<td style="color:#f1f8fc;">'.$j.'</td>';
    $j++;
}
echo '</tr>';

echo '<tr style="background:#d5e5f6;">';
echo "<td><a href=?".lastYear($year,$month).">".'<<'.'</a></td>';
echo "<td><a href=?".lastMonth($year,$month).">".'<'.'</a></td>';
echo '<td colspan = 3 style="width:105px;" >';
echo '<form name = "myform" method = "GET">';
echo '<select name = year  class="year">';
for($start_year = 1970;$start_year<2039;$start_year++){
 $selected='';
 if( $year== $start_year ) { $selected='selected'; }
 echo '<option value ='. $start_year.' '.$selected.'>'.$start_year.'</option>'." nt";
}
echo '</select>';
echo '<select name = month class="month">';
for($start_month = 1;$start_month<=12;$start_month++){
 $selected='';
 if( $month== $start_month ) { $selected='selected';}
 echo '<option value = '.$start_month.' '.$selected.'>'.$start_month.'</option>'." nt";
}
echo '</select>';
/*echo '月';*/
/*echo '<input type = "submit" name = "search" value = "查询">';*/
echo '</form>';
echo '</td>';
echo "<td><a href=?".nextYear($year,$month).">".'>>'.'</a></td>';
echo "<td><a href=?".nextMonth($year,$month).">".'>'.'</a></td>';
echo '</tr>';
echo '</table>';

function lastYear($year,$month){
 $year = $year-1;
 return "year=$year&month=$month";
}
function lastMonth($year,$month){
 if($month == 1){
  $year = $year -1;
  $month = 12;
 }else{
  $month--;
 }
 return "year=$year&month=$month";
}
function nextYear($year,$month){
 $year = $year+1;
 return "year=$year&month=$month";
}
function nextMonth($year,$month){
 if($month == 12){
  $year = $year +1;
  $month = 1;
 }else {
  $month++;
 }
 return "year=$year&month=$month";
}

?>
</div>
 

<?php教程
/**

* 转化 为 /
*
* @param string $path 路径
* @return string 路径
*/
function dir_path($path) {
 $path = str_replace('\', '/', $path);
 if(substr($path, -1) != '/') $path = $path.'/';
 return $path;
}
/**
* 创建目录
*
* @param string $path 路径
* @param string $mode 属性
* @return string 如果已经存在则返回true,否则为flase
*/
function dir_create($path, $mode = 0777) {
 if(is_dir($path)) return TRUE;
 $ftp_enable = 0;
 $path = dir_path($path);
 $temp = explode('/', $path);
 $cur_dir = '';
 $max = count($temp) - 1;
 for($i=0; $i<$max; $i++) {
  $cur_dir .= $temp[$i].'/';
  if (@is_dir($cur_dir)) continue;
  @mkdir($cur_dir, 0777,true);
  @chmod($cur_dir, 0777);
 }
 return is_dir($path);
}
/**
* 拷贝目录及下面所有文件
*
* @param string $fromdir 原路径
* @param string $todir  目标路径
* @return string 如果目标路径不存在则返回false,否则为true
*/
function dir_copy($fromdir, $todir) {
 $fromdir = dir_path($fromdir);
 $todir = dir_path($todir);
 if (!is_dir($fromdir)) return FALSE;
 if (!is_dir($todir)) dir_create($todir);
 $list = glob($fromdir.'*');
 if (!empty($list)) {
  foreach($list as $v) {
   $path = $todir.basename($v);
   if(is_dir($v)) {
    dir_copy($v, $path);
   } else {
    copy($v, $path);
    @chmod($path, 0777);
   }
  }
 }
    return TRUE;
}
/**
* 转换目录下面的所有文件编码格式
*
* @param string $in_charset  原字符集
* @param string $out_charset 目标字符集
* @param string $dir   目录地址
* @param string $fileexts  转换的文件格式
* @return string 如果原字符集和目标字符集相同则返回false,否则为true
*/
function dir_iconv($in_charset, $out_charset, $dir, $fileexts = 'php|html|htm|shtml|shtm|js|txt|xml') {
 if($in_charset == $out_charset) return false;
 $list = dir_list($dir);
 foreach($list as $v) {
  if (preg_match("/.($fileexts)/i", $v) && is_file($v)){
   file_put_contents($v, iconv($in_charset, $out_charset, file_get_contents($v)));
  }
 }
 return true;
}
/**
* 列出目录下所有文件
*
* @param string $path  路径
* @param string $exts  扩展名
* @param array $list  增加的文件列表
* @return array 所有满足条件的文件
*/
function dir_list($path, $exts = '', $list= array()) {
 $path = dir_path($path);
 $files = glob($path.'*');
 foreach($files as $v) {
  $fileext = fileext($v);
  if (!$exts || preg_match("/.($exts)/i", $v)) {
   $list[] = $v;
   if (is_dir($v)) {
    $list = dir_list($v, $exts, $list);
   }
  }
 }
 return $list;
}
/**
* 设置目录下面的所有文件的访问和修改时间
*
* @param string $path  路径
* @param int  $mtime  修改时间
* @param int  $atime  访问时间
* @return array 不是目录时返回false,否则返回 true
*/
function dir_touch($path, $mtime = TIME, $atime = TIME) {
 if (!is_dir($path)) return false;
 $path = dir_path($path);
 if (!is_dir($path)) touch($path, $mtime, $atime);
 $files = glob($path.'*');
 foreach($files as $v) {
  is_dir($v) ? dir_touch($v, $mtime, $atime) : touch($v, $mtime, $atime);
 }
 return true;
}
/**
* 目录列表
*
* @param string $dir  路径
* @param int  $parentid 父id
* @param array $dirs  传入的目录
* @return array 返回目录列表
*/
function dir_tree($dir, $parentid = 0, $dirs = array()) {
 global $id;
 if ($parentid == 0) $id = 0;
 $list = glob($dir.'*');
 foreach($list as $v) {
  if (is_dir($v)) {
            $id++;
   $dirs[$id] = array('id'=>$id,'parentid'=>$parentid, 'name'=>basename($v), 'dir'=>$v.'/');
   $dirs = dir_tree($v.'/', $id, $dirs);
  }
 }
 return $dirs;
}

/**
* 删除目录及目录下面的所有文件
*
* @param string $dir  路径
* @return bool 如果成功则返回 TRUE,失败则返回 FALSE
*/
function dir_delete($dir) {
 $dir = dir_path($dir);
 if (!is_dir($dir)) return FALSE;
 $list = glob($dir.'*');
 foreach($list as $v) {
  is_dir($v) ? dir_delete($v) : @unlink($v);
 }
    return @rmdir($dir);
}

?>

for循环只对数字索引有限;for和foreach遍历结束后不需要对数据进行reset()操作即可供下次遍历,而each方法则需要

<?php教程
//a
$arr=array('a'=>'abc','b'=>123,'c'=>true);
//b
//$arr=range('a','d');

//1   
for($i=0;$i<sizeof($arr);$i++)
    echo $arr[$i].', ';
echo '<br />';

//2
foreach($arr as $key)
    echo "$key, ";
echo '<br />';

//3
foreach($arr as $key=>$val)
    echo "$key-$val, ";
echo '<br />';

//4
reset($arr);
while($item=each($arr)){
    echo $item['key'].'-'.$item['value'].', ';
}
echo '<br />';

//5
reset($arr);
while(list($key,$val)=each($arr)){
    echo "$key-$val, ";
}
echo '<br />';
?>使用语句a $arr=array('a'=>'abc','b'=>123,'c'=>true); 对$arr进行初始化得到数字索引数组,输出如下:

, , ,
abc, 123, 1,
a-abc, b-123, c-1,
a-abc, b-123, c-1,
a-abc, b-123, c-1, 使用语句b $arr=range('a','d'); 对$arr进行初始化得到关联数组,输出如下:

a, b, c, d,
a, b, c, d,
0-a, 1-b, 2-c, 3-d,
0-a, 1-b, 2-c, 3-d,
0-a, 1-b, 2-c, 3-d,

经过反复多次测试,结果表明,对于遍历同样一个数组,foreach速度最快,最慢的则是while。foreach比while大约快20% ~ 30%左右。随后再把数组下标增加到500000、5000000测试结果也一样。但从原理上来看,foreach是对数组副本进行操作(通过拷贝数组),而while则通过移动数组内部指标进行操作,一般逻辑下认为,while应该比foreach快(因为foreach在开始执行的时候首先把数组复制进去,而while直接移动内部指标。),但结果刚刚相反。原因应该是,foreach是PHP内部实现,而while是通用的循环结构

 

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