PHP uses the DOMDocument class to generate HTML instances (including common tag elements)_PHP tutorial

In this chapter, let’s learn how to use core PHP to generate HTML files

Recently, when I was querying php.net, I found that the DOMDocument class is very interesting. It can be used to generate XML or HTML files. DOMDocument provides us with a series of methods to generate XML/HTML tags and insert them into the DOM. Now Let’s see how it is generated

Let’s first take a look at the effect generated by the method it provides, as shown in the picture below:

1. Create a new DOM file

Copy code The code is as follows:

//Instantiate the DOMDocument class and specify the version number
$dom = new DOMDocument('1.0');

//Output the generated tags or codes to the page
echo $dom->saveHTML();

2. Add new HTML elements to the DOM file

Copy code The code is as follows:

$css_text = 'p{color:#ff00ff;}';

//Create new style tag and CSS content
$style = $dom->createElement('style', $css_text);

//Add the style tag to the DOM file
$dom->appendChild($style);

//The following is the output effect

What needs to be mentioned here is the createElement method. When you want to create a

Copy code The code is as follows:

$p_text = 'This is a paragraph.';

//Create new p tag and content
$p = $dom->createElement('p', $p_text);

//Create new attribute 'id'
$domAttribute = $dom->createAttribute('id');

//Add value to attribute 'id'
$domAttribute->value = 'description';

//Add this attribute to the p tag
$p->appendChild($domAttribute);

//Add the p tag to the DOM file
$dom->appendChild($p);

//The following is the output effect

One day

4. Add Form element

Add textbox

Copy code The code is as follows:

$input = $dom->createElement('input');

$domAttribute = $dom->createAttribute('type');
$domAttribute->value = 'text';
$input->appendChild($domAttribute);

$domAttribute = $dom->createAttribute('name');
$domAttribute->value = 'e-mail';
$input->appendChild($domAttribute);

$dom->appendChild($input);

//The following is the output effect

5. Create Table

Copy code The code is as follows:

$table = $dom->createElement('table');

$domAttribute = $dom->createAttribute('id');
$domAttribute->value = 'my_table';

$tr = $dom->createElement('tr');
$table->appendChild($tr);

$td = $dom->createElement('td', 'Label');
$tr->appendChild($td);

$td = $dom->createElement('td', 'Value');
$tr->appendChild($td);

$table->appendChild($domAttribute);

$dom->appendChild($table);

//The following is the output effect


                                                                                                                                                                                                                                                              
                                                                                                                                                                                                     

Label

Finally, let’s take a
complete and more complex example:

Copy code

The code is as follows:

$dom = new DOMDocument('1.0');

//CSS content
$css_text = '';
$css_text .= 'body{width:285px;margin:auto;margin-top:50px;}';
$css_text .= '#my_table{border:1px solid #ececec;}';
$css_text .= '#my_table th{border:1px solid #ececec;padding:5px;text-decoration:underline;}';
$css_text .= '#my_table td{border:1px solid #ececec;padding:5px;}';
$css_text .= '#my_table td:first-child{text-align:right;color:#333333;font-weight:bold;color:#999999;}';

//Create new style tag and CSS content
$style = $dom->createElement('style', $css_text);

//Create new attribute 'type'
$domAttribute = $dom->createAttribute('type');

//Add value to attribute 'type'
$domAttribute->value = 'text/css';

//Add this attribute to the style tag
$style->appendChild($domAttribute);

//Add the style tag to the DOM file
$dom->appendChild($style);

//Add form
$form = $dom->createElement('form');
$dom->appendChild($form);
$formAttribute = $dom->createAttribute('method');
$formAttribute->value = 'post';
$form->appendChild($formAttribute);

//Add table
$table = $dom->createElement('table');
$tableAttribute = $dom->createAttribute('id');
$tableAttribute->value = 'my_table';
$table->appendChild($tableAttribute);

//Add new row(row)
$tr = $dom->createElement('tr');
$table->appendChild($tr);

//Add new column(column)
$th = $dom->createElement('th', 'Generate HTML using PHP');
$tr->appendChild($th);
$thAttribute = $dom->createAttribute('colspan');
$thAttribute->value = '2';
$th->appendChild($thAttribute);

//Add new row(row)
$tr = $dom->createElement('tr');
$table->appendChild($tr);

//Add new column(column)
$td = $dom->createElement('td', 'First Name');
$tr->appendChild($td);

//Add new column(column)
$td = $dom->createElement('td');
$tr->appendChild($td);

//Add input element to column(column)
$input = $dom->createElement('input');
$td->appendChild($input);
$tdAttribute = $dom->createAttribute('type');
$tdAttribute->value = 'text';
$input->appendChild($tdAttribute);
$tdAttribute = $dom->createAttribute('name');
$tdAttribute->value = 'f_name';
$input->appendChild($tdAttribute);

//Add new row(row)
$tr = $dom->createElement('tr');
$table->appendChild($tr);

//Add new column(column)
$td = $dom->createElement('td', 'Email');
$tr->appendChild($td);

//Add new column(column)
$td = $dom->createElement('td');
$tr->appendChild($td);

//Add input element to column(column)
$input = $dom->createElement('input');
$td->appendChild($input);
$tdAttribute = $dom->createAttribute('type');
$tdAttribute->value = 'text';
$input->appendChild($tdAttribute);
$tdAttribute = $dom->createAttribute('name');
$tdAttribute->value = 'e-mail';
$input->appendChild($tdAttribute);

//Add new row(row)
$tr = $dom->createElement('tr');
$table->appendChild($tr);

//Add new column(column)
$td = $dom->createElement('td', 'Gender');
$tr->appendChild($td);

//Add new column(column)
$td = $dom->createElement('td');
$tr->appendChild($td);

//Add input element to column(column)
$select = $dom->createElement('select');
$td->appendChild($select);
$tdAttribute = $dom->createAttribute('name');
$tdAttribute->value = 'gender';
$select->appendChild($tdAttribute);

//Add options to the Select drop-down box
$opt = $dom->createElement('option', 'Male');
$domAttribute = $dom->createAttribute('value');
$domAttribute->value = 'male';
$opt->appendChild($domAttribute);
$select->appendChild($opt);

$opt = $dom->createElement('option', 'Female');
$domAttribute = $dom->createAttribute('value');
$domAttribute->value = 'female';
$opt->appendChild($domAttribute);
$select->appendChild($opt);
 
//添加新的行(row)
$tr = $dom->createElement('tr');
$table->appendChild($tr);
 
//添加新的列(column)
$td = $dom->createElement('td', 'Interest');
$tr->appendChild($td);
 
//添加新的列(column)
$td = $dom->createElement('td');
$tr->appendChild($td);
 
//添加 input 元素到列(column)中
$radio = $dom->createElement('input');
$td->appendChild($radio);
$radAttribute = $dom->createAttribute('type');
$radAttribute->value = 'radio';
$radio->appendChild($radAttribute);
$radAttribute = $dom->createAttribute('name');
$radAttribute->value = 'interest';
$radio->appendChild($radAttribute);
$radAttribute = $dom->createAttribute('id');
$radAttribute->value = 'php';
$radio->appendChild($radAttribute);
 
$label = $dom->createElement('label', 'PHP');
$labelAttribute = $dom->createAttribute('for');
$labelAttribute->value = 'php';
$label->appendChild($labelAttribute);
$td->appendChild($label);
 
$radio = $dom->createElement('input');
$td->appendChild($radio);
$radAttribute = $dom->createAttribute('type');
$radAttribute->value = 'radio';
$radio->appendChild($radAttribute);
$radAttribute = $dom->createAttribute('name');
$radAttribute->value = 'interest';
$radio->appendChild($radAttribute);
$radAttribute = $dom->createAttribute('id');
$radAttribute->value = 'jquery';
$radio->appendChild($radAttribute);
 
$label = $dom->createElement('label', 'jQuery');
$labelAttribute = $dom->createAttribute('for');
$labelAttribute->value = 'jquery';
$label->appendChild($labelAttribute);
$td->appendChild($label);
 
//添加新的行(row)
$tr = $dom->createElement('tr');
$table->appendChild($tr);
 
//添加新的列(column)
$td = $dom->createElement('td');
$tr->appendChild($td);
$tdAttribute = $dom->createAttribute('colspan');
$tdAttribute->value = '2';
$td->appendChild($tdAttribute);
 
//添加 input 元素到列(column)中
$input = $dom->createElement('input');
$td->appendChild($input);
$tdAttribute = $dom->createAttribute('type');
$tdAttribute->value = 'submit';
$input->appendChild($tdAttribute);
$tdAttribute = $dom->createAttribute('value');
$tdAttribute->value = 'Sign-Up';
$input->appendChild($tdAttribute);
 
//添加 table 到 form 中
$form->appendChild($table);
 
echo $dom->saveHTML();

http://www.bkjia.com/PHPjc/824813.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/824813.htmlTechArticle在这一章节里， 我们来了解下如何利用核心(core) PHP 生成 HTML 文件 最近我在查询 php.net 的时候，发现 DOMDocument 这个类非常的有意思， 可以...