对于初学者来说,PHP语言的掌握还是需要在具体实践中不断的去积累经验来增加我们对PHP的理解程度。下面就以一个范例为大家介绍PHP二级联动菜单的实现方法。#t#
PHP二级联动菜单代码示例:
- < script language = "JavaScript">
- var onecount;
- onecount=0;
- subcat = new Array();
- < ?php
- mysql_connect("localhost","charles",
"charles"); - mysql_select_db( "_crm" );
- $sql = "select * from site";
- $result = mysql_query( $sql );
- $count = 0;
- while($res = mysql_fetch_row($result)){
- ?>
- subcat[< ?php echo $count ?>] = new Array
("< ?php echo $res[0]?>","< ?php echo
$res[2]?>","< ?php echo $res[1]?>"); - < ?php
- $count++;
- }
- echo "onecount=$count;";
- ?>
- //联动函数
- function changelocation(locationid)
- {
- document.myform.ctype.length = 0;
- var locationidlocationid=locationid;
- var i;
- for (i=0;i < onecount; i++)
- {
- if (subcat[i][2] == locationid)
- {
- //var newnewOption1=new Option(subcat[i]
[1], subcat[i][0]); - //document.all.ctype.add(newOption1);
- document.myform.ctype.options[document.
myform.ctype.length] = new Option(subcat
[i][1], subcat[i][0]); - }
- }
- }
- < /script>
- < form method="post" name="myform"
action="ru_query.php"> - < select name="type" onChange="changelocation(
document.myform.type.options[document.myfo
rm.type.selectedIndex].value)" size="1"> - < option selected value="">main< /option>
- < ?php
- $sql = "select * from entreprise";
- $result = mysql_query( $sql );
- while($res = mysql_fetch_row($result)){
- ?>
- < option value="< ?php echo $res[0]; ?>">
- < ?php echo $res[1]; ?>< /option>
- < ?php } ?>
- < /select>
- < select name="ctype">
- < option selected value="">sub< /option>
- < /select>
- < input type="submit" name="Submit" value="search">
- < /form>
以上代码就是PHP二级联动菜单的具体实现方法。