Simple_html_dom-based usage summary _ PHP Tutorial

Summary based on simple_html_dom. Copy the code as follows: what is a simple example of P? Phpincludesimple_html_dom.php; load the simple_html_dom.php file $ htmlfile_get_html (www.google.com); get html $ domnew The code is as follows:

Simple example
$ Html = file_get_html ('http: // www.google.com/'); // Obtain html $ dom = new simple_html_dom (); // new simple_html_dom object $ dom-> load ($ html) // load html // Find all images foreach ($ dom-> find ('IMG ') as $ element) {// Obtain the img tag array echo $ element-> src.'
'; // Get src} in each img tag // Find all links foreach ($ dom-> find ('A') as $ element) {// Obtain the array echo $ element-> href of the tag.'
'; // Obtain the href in each a tag}

$ Html = file_get_html ('http: // slashdot.org/'); // Obtain html $ dom = new simple_html_dom (); // new simple_html_dom object $ dom-> load ($ html); // load html // Find all article blocksforeach ($ dom-> find ('P. article ') as $ article) {$ item ['title'] = $ article-> find ('P. title ', 0)-> plaintext; // plaintext get plain text $ item ['Intro'] = $ article-> find ('P. intro ', 0)-> plaintext; $ item ['Details'] = $ article-> find ('P. details ', 0)-> plaintext; $ articles [] = $ item;} print_r ($ articles );

}

// Create DOM from string

$ Html = str_get_html ('

Hello

World

');
$ Dom = new simple_html_dom (); // new simple_html_dom object

$ Dom-> load ($ html); // load html
$ Dom-> find ('P', 1)-> class = 'bar'; // class = assign a value to the class of the second p

$ Dom-> find ('P [id = hello] ', 0)-> innertext = 'foo'; // innertext internal text

Echo $ dom;

// Output:

Foo

World

DOM methods & properties
Name Description
Void _ construct ([string $ filename]) constructor automatically loads the file name parameters, whether it is text or file/url.
String plaintext plain text
Void clear () clears memory
Void load (string $ content) loads content
String save ([string $ filename]) Dumps the internal DOM tree back into a string. If the $ filename is set, result string will save to file.
Void load_file (string $ filename) Load contents from a file or a URL.
Void set_callback (string $ function_name) sets a callback function.
Mixed find (string $ selector [, int $ index]) finds the CSS selector of the element. Returns the nth element object. if the index is set, an array object is returned.

4. detailed description of the find method

Find (string $ selector [, int $ index])
// Find all anchors, returns a array of element objects a tag array
$ Ret = $ html-> find ('A ');

// Find (N) th anchor, returns element object or null if not found (zero based) first a tag
$ Ret = $ html-> find ('A', 0 );

// Find lastest anchor, returns element object or null if not found (zero based) the last a tag
$ Ret = $ html-> find ('A',-1 );

// Find all

With the id attribute
$ Ret = $ html-> find ('P [id] ');

// Find all

Which attribute id = foo
$ Ret = $ html-> find ('P [id = foo] ');

// Find all element which id = foo
$ Ret = $ html-> find ('# Foo ');

// Find all element which class = foo
$ Ret = $ html-> find ('. Foo ');

// Find all element has attribute id
$ Ret = $ html-> find ('* [id]');

// Find all anchors and images a tag and img tag array
$ Ret = $ html-> find ('a, img ');

// Find all anchors and images with the "title" attribute
$ Ret = $ html-> find ('a [title], img [title] ');

// Find all

In

$ Es = $ html-> find ('Ul li'); array of li tags under ul tags

// Find Nested

Tags
$ Es = $ html-> find ('P P'); p tag array under p tag

// Find allIn




// Find all td tags with attribite align = center in table tags
$ Es = $ html-> find (''table td [align = center] ');

5. Element method
$ E = $ html-> find ("p", 0); // The methods owned by $ e are shown in the following table.
Attribute Name Usage
$ E-> tag
$ E-> outertext
$ E-> innertext
$ E-> plaintext plain text

// Example
$ Html = str_get_html ("





FooBar


Bar


6. DOM traversing method
Method Description
Mixed $ e-> children ([int $ index]) child element
Element $ e-> parent () parent element
Element $ e-> first_child () first child element
Element $ e-> last_child () last child element
Element $ e-> next_sibling () is the last sibling element.
Element $ e-> prev_sibling ()


// Example
Echo $ html-> find ("# p1", 0)-> children (1)-> children (1)-> children (2)-> id;
// Or
Echo $ html-> getElementById ("p1")-> childNodes (1)-> childNodes (1)-> childNodes (2)-> getAttribute ('id ');





FooBar

The http://www.bkjia.com/PHPjc/327967.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/327967.htmlTechArticle code is as follows: P simple example? Phpinclude "simple_html_dom.php"; // load the simple_html_dom.php file $ html = file_get_html ('http: // www.google.com/'); // Obtain html $ dom = new...

Which class = hello$ Es = $ html-> find ('table. hello td '); td tag array under table tags ");Echo $ e-> tag; // Returns: "p"Echo $ e-> outertext; // Returns :""Echo $ e-> innertext; // Returns: "foo"Echo $ e-> plaintext; // Returns: "foo bar"