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How to implement cascade in php

藏色散人
藏色散人Original
2020-10-16 09:53:332175browse

php method to implement cascading: first create the fun.js file and send a GET request to the server; then create index.php and use jQuery to make a cascading drop-down selection box to select the region; finally create returnpc. php and pc.php will do.

How to implement cascade in php

Recommended: "PHP Video Tutorial"

jQuery ajax PHP implemented cascading drop-down list box function:

一码

fun.js：

// JavaScript Document
$(document).ready(
 function(){
 $.get("returnpc.php?flag=p", null, function(data){ //向服务器发送GET请求，获取省份的值，并将结果追加到省份下拉列表中
   $("#p").append(data);
 });
 $("#c").css("display","none"); //初始状态使城市下拉列表不可见
 $("#p").change(function(){ //为省份下拉列表增加改变事件
   if($("#p").val()==""){ //在没选择省份的情况下，使城市下拉列表不可见
    $("#c").css("display","none");
  }else{
     $.get("returnpc.php?flag=c&p="+$("#p").val(), null, function(data){ //如果选择了某省份，则向服务器发送GET请求，使用回调函数为城市下拉列表赋值，并使城市下拉列表可见
      $("#c").css("display","");
   $("#c").empty();
      $("#c").append(data); //将数据追加到城市下拉列表
    });
    }
 });
  }
);

index.php：

<!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=gb2312" />
<title>使用jQuery制作级联下拉选择框选择地区</title>
</head>
<script language="javascript" src="js/jquery-1.3.2.js"></script>
<script language="javascript" src="js/fun.js"></script>
<body>
<select id="p" name="p" >
  <option value="">-请选择地区-</option>
</select>
<select id="c" name="c">
</select>
</body>
</html>

pc.php : 

<?php
/* 说明： 全国（省，直辖市，自治区，特别行政区）数组*/
$p = array(&#39;北京&#39;,&#39;上海&#39;,&#39;天津&#39;,&#39;重庆&#39;,&#39;黑龙江&#39;,&#39;吉林&#39;,&#39;辽宁&#39;,&#39;内蒙古&#39;,&#39;河北&#39;,&#39;河南&#39;,&#39;山东&#39;,&#39;山西&#39;,&#39;江苏&#39;,&#39;安徽&#39;,&#39;陕西&#39;,&#39;宁夏&#39;,&#39;甘肃&#39;,&#39;青海&#39;,&#39;湖北&#39;,&#39;湖南&#39;,&#39;浙江&#39;,&#39;江西&#39;,&#39;福建&#39;,&#39;贵州&#39;,&#39;四川&#39;,&#39;广东&#39;,&#39;广西&#39;,&#39;云南&#39;,&#39;海南&#39;,&#39;新疆&#39;);
/* 说明： 省，市，直辖市，自治区所属的城市数组*/
$c = array();
$c[0] = array(&#39;北京&#39;);
$c[1] = array(&#39;上海&#39;);
$c[2] = array(&#39;天津&#39;);
$c[3] = array(&#39;重庆&#39;);
$c[4] = array(&#39;哈尔滨&#39;,&#39;齐齐哈尔&#39;,&#39;牡丹江&#39;,&#39;大庆&#39;,&#39;伊春&#39;,&#39;双鸭山&#39;,&#39;鹤岗&#39;,&#39;鸡西&#39;,&#39;佳木斯&#39;,&#39;七台河&#39;,&#39;黑河&#39;,&#39;绥化&#39;,&#39;大兴安岭&#39;);
$c[5] = array(&#39;长春&#39;,&#39;延边&#39;,&#39;吉林&#39;,&#39;白山&#39;,&#39;白城&#39;,&#39;四平&#39;,&#39;松原&#39;,&#39;辽源&#39;,&#39;大安&#39;,&#39;通化&#39;);
$c[6] = array(&#39;沈阳&#39;,&#39;大连&#39;,&#39;葫芦岛&#39;,&#39;旅顺&#39;,&#39;本溪&#39;,&#39;抚顺&#39;,&#39;铁岭&#39;,&#39;辽阳&#39;,&#39;营口&#39;,&#39;阜新&#39;,&#39;朝阳&#39;,&#39;锦州&#39;,&#39;丹东&#39;,&#39;鞍山&#39;);
$c[7] = array(&#39;呼和浩特&#39;,&#39;呼伦贝尔&#39;,&#39;锡林浩特&#39;,&#39;包头&#39;,&#39;赤峰&#39;,&#39;海拉尔&#39;,&#39;乌海&#39;,&#39;鄂尔多斯&#39;,&#39;通辽&#39;);
$c[8] = array(&#39;石家庄&#39;,&#39;唐山&#39;,&#39;张家口&#39;,&#39;廊坊&#39;,&#39;邢台&#39;,&#39;邯郸&#39;,&#39;沧州&#39;,&#39;衡水&#39;,&#39;承德&#39;,&#39;保定&#39;,&#39;秦皇岛&#39;);
$c[9] = array(&#39;郑州&#39;,&#39;开封&#39;,&#39;洛阳&#39;,&#39;平顶山&#39;,&#39;焦作&#39;,&#39;鹤壁&#39;,&#39;新乡&#39;,&#39;安阳&#39;,&#39;濮阳&#39;,&#39;许昌&#39;,&#39;漯河&#39;,&#39;三门峡&#39;,&#39;南阳&#39;,&#39;商丘&#39;,&#39;信阳&#39;,&#39;周口&#39;,&#39;驻马店&#39;);
$c[10] = array(&#39;济南&#39;,&#39;青岛&#39;,&#39;淄博&#39;,&#39;威海&#39;,&#39;曲阜&#39;,&#39;临沂&#39;,&#39;烟台&#39;,&#39;枣庄&#39;,&#39;聊城&#39;,&#39;济宁&#39;,&#39;菏泽&#39;,&#39;泰安&#39;,&#39;日照&#39;,&#39;东营&#39;,&#39;德州&#39;,&#39;滨州&#39;,&#39;莱芜&#39;,&#39;潍坊&#39;);
$c[11] = array(&#39;太原&#39;,&#39;阳泉&#39;,&#39;晋城&#39;,&#39;晋中&#39;,&#39;临汾&#39;,&#39;运城&#39;,&#39;长治&#39;,&#39;朔州&#39;,&#39;忻州&#39;,&#39;大同&#39;,&#39;吕梁&#39;);
$c[12] = array(&#39;南京&#39;,&#39;苏州&#39;,&#39;昆山&#39;,&#39;南通&#39;,&#39;太仓&#39;,&#39;吴县&#39;,&#39;徐州&#39;,&#39;宜兴&#39;,&#39;镇江&#39;,&#39;淮安&#39;,&#39;常熟&#39;,&#39;盐城&#39;,&#39;泰州&#39;,&#39;无锡&#39;,&#39;连云港&#39;,&#39;扬州&#39;,&#39;常州&#39;,&#39;宿迁&#39;);
$c[13] = array(&#39;合肥&#39;,&#39;巢湖&#39;,&#39;蚌埠&#39;,&#39;安庆&#39;,&#39;六安&#39;,&#39;滁州&#39;,&#39;马鞍山&#39;,&#39;阜阳&#39;,&#39;宣城&#39;,&#39;铜陵&#39;,&#39;淮北&#39;,&#39;芜湖&#39;,&#39;毫州&#39;,&#39;宿州&#39;,&#39;淮南&#39;,&#39;池州&#39;);
$c[14] = array(&#39;西安&#39;,&#39;韩城&#39;,&#39;安康&#39;,&#39;汉中&#39;,&#39;宝鸡&#39;,&#39;咸阳&#39;,&#39;榆林&#39;,&#39;渭南&#39;,&#39;商洛&#39;,&#39;铜川&#39;,&#39;延安&#39;);
$c[15] = array(&#39;银川&#39;,&#39;固原&#39;,&#39;中卫&#39;,&#39;石嘴山&#39;,&#39;吴忠&#39;);
$c[16] = array(&#39;兰州&#39;,&#39;白银&#39;,&#39;庆阳&#39;,&#39;酒泉&#39;,&#39;天水&#39;,&#39;武威&#39;,&#39;张掖&#39;,&#39;甘南&#39;,&#39;临夏&#39;,&#39;平凉&#39;,&#39;定西&#39;,&#39;金昌&#39;);
$c[17] = array(&#39;西宁&#39;,&#39;海北&#39;,&#39;海西&#39;,&#39;黄南&#39;,&#39;果洛&#39;,&#39;玉树&#39;,&#39;海东&#39;,&#39;海南&#39;);
$c[18] = array(&#39;武汉&#39;,&#39;宜昌&#39;,&#39;黄冈&#39;,&#39;恩施&#39;,&#39;荆州&#39;,&#39;神农架&#39;,&#39;十堰&#39;,&#39;咸宁&#39;,&#39;襄樊&#39;,&#39;孝感&#39;,&#39;随州&#39;,&#39;黄石&#39;,&#39;荆门&#39;,&#39;鄂州&#39;);
$c[19] = array(&#39;长沙&#39;,&#39;邵阳&#39;,&#39;常德&#39;,&#39;郴州&#39;,&#39;吉首&#39;,&#39;株洲&#39;,&#39;娄底&#39;,&#39;湘潭&#39;,&#39;益阳&#39;,&#39;永州&#39;,&#39;岳阳&#39;,&#39;衡阳&#39;,&#39;怀化&#39;,&#39;韶山&#39;,&#39;张家界&#39;);
$c[20] = array(&#39;杭州&#39;,&#39;湖州&#39;,&#39;金华&#39;,&#39;宁波&#39;,&#39;丽水&#39;,&#39;绍兴&#39;,&#39;雁荡山&#39;,&#39;衢州&#39;,&#39;嘉兴&#39;,&#39;台州&#39;,&#39;舟山&#39;,&#39;温州&#39;);
$c[21] = array(&#39;南昌&#39;,&#39;萍乡&#39;,&#39;九江&#39;,&#39;上饶&#39;,&#39;抚州&#39;,&#39;吉安&#39;,&#39;鹰潭&#39;,&#39;宜春&#39;,&#39;新余&#39;,&#39;景德镇&#39;,&#39;赣州&#39;);
$c[22] = array(&#39;福州&#39;,&#39;厦门&#39;,&#39;龙岩&#39;,&#39;南平&#39;,&#39;宁德&#39;,&#39;莆田&#39;,&#39;泉州&#39;,&#39;三明&#39;,&#39;漳州&#39;);
$c[23] = array(&#39;贵阳&#39;,&#39;安顺&#39;,&#39;赤水&#39;,&#39;遵义&#39;,&#39;铜仁&#39;,&#39;六盘水&#39;,&#39;毕节&#39;,&#39;凯里&#39;,&#39;都匀&#39;);
$c[24] = array(&#39;成都&#39;,&#39;泸州&#39;,&#39;内江&#39;,&#39;凉山&#39;,&#39;阿坝&#39;,&#39;巴中&#39;,&#39;广元&#39;,&#39;乐山&#39;,&#39;绵阳&#39;,&#39;德阳&#39;,&#39;攀枝花&#39;,&#39;雅安&#39;,&#39;宜宾&#39;,&#39;自贡&#39;,&#39;甘孜州&#39;,&#39;达州&#39;,&#39;资阳&#39;,&#39;广安&#39;,&#39;遂宁&#39;,&#39;眉山&#39;,&#39;南充&#39;);
$c[25] = array(&#39;广州&#39;,&#39;深圳&#39;,&#39;潮州&#39;,&#39;韶关&#39;,&#39;湛江&#39;,&#39;惠州&#39;,&#39;清远&#39;,&#39;东莞&#39;,&#39;江门&#39;,&#39;茂名&#39;,&#39;肇庆&#39;,&#39;汕尾&#39;,&#39;河源&#39;,&#39;揭阳&#39;,&#39;梅州&#39;,&#39;中山&#39;,&#39;德庆&#39;,&#39;阳江&#39;,&#39;云浮&#39;,&#39;珠海&#39;,&#39;汕头&#39;,&#39;佛山&#39;);
$c[26] = array(&#39;南宁&#39;,&#39;桂林&#39;,&#39;阳朔&#39;,&#39;柳州&#39;,&#39;梧州&#39;,&#39;玉林&#39;,&#39;桂平&#39;,&#39;贺州&#39;,&#39;钦州&#39;,&#39;贵港&#39;,&#39;防城港&#39;,&#39;百色&#39;,&#39;北海&#39;,&#39;河池&#39;,&#39;来宾&#39;,&#39;崇左&#39;);
$c[27] = array(&#39;昆明&#39;,&#39;保山&#39;,&#39;楚雄&#39;,&#39;德宏&#39;,&#39;红河&#39;,&#39;临沧&#39;,&#39;怒江&#39;,&#39;曲靖&#39;,&#39;思茅&#39;,&#39;文山&#39;,&#39;玉溪&#39;,&#39;昭通&#39;,&#39;丽江&#39;,&#39;大理&#39;);
$c[28] = array(&#39;海口&#39;,&#39;三亚&#39;,&#39;儋州&#39;,&#39;琼山&#39;,&#39;通什&#39;,&#39;文昌&#39;);
$c[29] = array(&#39;乌鲁木齐&#39;,&#39;阿勒泰&#39;,&#39;阿克苏&#39;,&#39;昌吉&#39;,&#39;哈密&#39;,&#39;和田&#39;,&#39;喀什&#39;,&#39;克拉玛依&#39;,&#39;石河子&#39;,&#39;塔城&#39;,&#39;库尔勒&#39;,&#39;吐鲁番&#39;,&#39;伊宁&#39;);
?>

returnpc.php：

<?php
require_once &#39;pc.php&#39;;  //包含省份数组和城市数组
$flag = $_GET[&#39;flag&#39;];   //用于区分是返回省份信息还是返回城市信息
$str="";
if($flag == p){   //如果参数flag的值为p，则返回省份信息
  for($i=0; $i<count($p); $i++){   //通过循环整理所有要追加到省份下拉列表的内容
    $str.="<option value=\"".iconv(&#39;gbk&#39;,&#39;utf-8&#39;,$p[$i])."\">".iconv(&#39;gbk&#39;,&#39;utf-8&#39;,$p[$i])."</option>";
  }
  echo $str;   //输出要返回的参数
}else{
  $index = array_search($_GET[&#39;p&#39;], $p);   //提取所选择省份的在省份数组中对应的键值
  for($j=0; $j<count($c[$index]); $j++){    //通过循环整理所有要追加到城市下拉列表的内容
    $str.= "<option value=\"".iconv(&#39;gbk&#39;,&#39;utf-8&#39;,$c[$index][$j])."\">".iconv(&#39;gbk&#39;,&#39;utf-8&#39;,$c[$index][$j])."</option>";
 }
 echo $str;    //输出要返回的参数
}
?>

Second running result

##

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