代码语言：javascript复制
<?php
//Form.php
class form {
var $layout=true;//是否使用表格布局
var $action;//表单要提交到的URL
var $method;
var $enctype="";
var $name="";
var $id="";
var $class="";
function form($action,$method="POST"){ //通过构造函数初始化成员变量
$this->action=$action;
$this->method=$method;
}
function form_start(){
$text="<form action="{$this->action}" method="{$this->method}"";
if($this->class!==""){
$text.=" class="{$this->class}"";
}
if ($this->enctype!=="") {
$text.=" enctype="{$this->enctype}"";
}
if($this->id!==""){
$text.=" id="{$this->id}"";
}
if($this->name!==""){
$text.=" name="{$this->name}"";
}
$text.=">n";
if($this->layout==true){
$text.="<table>n";
}
return $text;
}
function form_end(){
if ($this->layout==true) {
$text="t</table>n";
$text.="</form>n";
}else {
$text="</form>n";
}
return $text;
}
//文本框函数
function form_text($name,$id,$label_name,$label_for,$value=""){
$text="<input type="text" name="{$name}" ";
$text.="id="{$id}" ";
if(isset($value)){
$text.="value="{$value}" ";
}
$text.="/>n";
$label=$this->form_label($label_name,$label_for);
$form_item=$this->form_item($label,$text);
return $form_item;
}
//密码框函数
function form_passwd($name,$id,$label_name,$label_for,$value=""){
$text="<input type="password" name="{$name}" ";
$text.="id="{$id}" ";
if(isset($value)){
$text.="value="{$value}" ";
}
$text.="/>n";
$label=$this->form_label($label_name,$label_for);
$form_item=$this->form_item($label,$text);
return $form_item;
}
//隐藏域函数
function form_hidden($name,$id,$label_name,$label_for,$value=""){
$text="<input type="hidden" name="{$name}" id="{$id}" ";
if(isset($value)){
$text.="value="{$value}" ";
}
$text.="/>n";
$label=$this->form_label($label_name,$label_for);
$form_item=$this->form_item($label,$text);
return $form_item;
}
//文件域函数
function form_file($name,$id,$label_name,$label_for,$size=""){
$text="<input type="file" name="{$name}" ";
$text.="id="{$id}" ";
if(isset($size)){
$text.="size="{$size}" ";
}
$text.="/>n";
$label=$this->form_label($label_name,$label_for);
$form_item=$this->form_item($label,$text);
return $form_item;
}
//复选框函数
function form_checkbox($name,$label=array(),$label_name,$label_for=""){
$i=0;
$text=array();
foreach ($label as $id=>$value){
$text[$i]="<input type="checkbox" id="{$id}" name="{$name}" value="{$value}" />";
$text[$i].="<label for="{$id}">{$value}</label>";
$i ;
}
$label=$this->form_label($label_name,$label_for);
$form_item=$this->form_item($label,$text);
return $form_item;
}
//单选框函数
function form_radio($name,$label=array(),$label_name,$label_for=""){
$i=0;
$text=array();
foreach ($label as $id=>$value){
$text[$i]="<input type="radio" id="{$id}" name="{$name}" value="{$value}" />";
$text[$i].="<label for="{$id}">{$value}</label>";
$i ;
}
$label=$this->form_label($label_name,$label_for);
$form_item=$this->form_item($label,$text);
return $form_item;
}
//下拉菜单函数
function form_select($id,$name,$options=array(),$selected=false,$label_name,$label_for,$onchange=""){
if($onchange!==""){
$text="<select id="{$id}" name="{$name}" onchang="{$onchange}">n";
}
else{
$text="<select id="{$id}" name="{$name}">n";
}
foreach ($options as $value=>$key){
if($selected==$value){
$text.="t<option valute="{$value}" selected="selected">{$key}</option>n";
}elseif ($selected===false) {
$text.="t<option value="{$value}">{$key}</option>n";
}
}
$text.="</select>";
$label=$this->form_label($label_name,$label_for);
$form_item=$this->form_item($label,$text);
return $form_item;
}
//多选列表函数
function form_selectmul($id,$name,$size,$options=array(),$label_name,$label_for){
$text="<select id="{$id}" name="{$name}" size="{$size}" multiple="multiple">n";
foreach ($options as $value=>$key){
$text.="t<option value="{$value}">{$key}</option>n";
}
$text.="</select>n";
$label=$this->form_label($label_name,$label_for);
$form_item=$this->form_item($label,$text);
return $form_item;
}
//按钮函数
function form_button($id,$name,$type,$value,$onclick=""){
$text="<button id="{$id}" name="{$name}" type="{$type}"";
if($onclick!==""){
$text.=" onclick='{$onclick}'";
}
$text.=">".$value;
$text.="</button>n";
if($this->layout==true){
$form_item="<tr>nt<th> </th><td>{$text}</td>n</tr>n";
}else {
$form_item=$text;
}
return $form_item;
}
//文本域函数
function form_textarea($id,$name,$cols,$rows,$label_name,$label_for,$value=""){
$text="<textarea id="{$id}" name="{$name}" cols="{$cols}" rows="{$rows}">{$value}</textarea>n";
$label=$this->form_label($label_name,$label_for);
$form_item=$this->form_item($label,$text);
return $form_item;
}
//文字标签函数
function form_label($text,$for){
if($for!==""){
$label="<label for="{$for}">{$text}：</label>";
}else {
$label=$text."：";
}
return $label;
}
function form_item($form_label,$form_text){
switch ($this->layout){
case true:
$text="<tr>n";
$text.="t<th class="label">";
$text.=$form_label;
$text.="</th>n";
$text.="t<td>";
$text.=$form_text;
$text.="</td>n";
$text.="</tr>n";
break;
case false:
$text=$form_label;
$text.=$form_text;
break;
}
return $text;
}
function CreateForm($form_item=array()){
echo $this->form_start();
foreach ($form_item as $item){
echo $item;
}
echo $this->form_end();
}
}
?></pre>
<!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" xml:lang="zh" lang="zh">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<link rel="stylesheet" type="text/css" href="css/styles.css" />
<title>用户登录</title>
</head>
<body>
<?php
require_once("form.php");
$form=new form($_SERVER['PHP_SELF']); //提交到本页
$form->layout=false; //不使用表格布局，大家可以把这句注释掉看结果有何不同
$name=$form->form_text("userid","userid","用户名","userid");
$passwd=$form->form_passwd("passwd","passwd","密码","passwd");
$submit=$form->form_button("","submit","submit","登录");
$form_item=array($name,$passwd,$submit);
$form->CreateForm($form_item);
?>
</body>
</html></pre> 
