Form.php

<?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();

}

}

?>

使用示例：

<!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>

以上所述就是本文的全部内容了，希望大家能够喜欢。