包简介

PHP Fast Simple HTML DOM parser.

README 文档

README

PHP Fast Simple HTML DOM Parser - fast and low mamory usage HTML DOM Parser with syntax like PHP Simple HTML DOM Parser

Установка

Для установки выполните команду:

composer require dimabdc/php-fast-simple-html-dom-parser

Быстрый старт

require_once "vendor/autoload.php";
use FastSimpleHTMLDom\Document;

// Create DOM from URL
$html = Document::file_get_html('https://habrahabr.ru/interesting/');

// Find all post blocks
$post = [];
foreach($html->find('div.post') as $post) {
    $item['title']   = $post->find('h1.title', 0)->plaintext;
    $item['hubs']    = $post->find('div.hubs', 0)->plaintext;
    $item['content'] = $post->find('div.content', 0)->plaintext;
    $post[] = $item;
}

print_r($post);

Как создать HTML DOM объект

// Create a DOM object from a string
$html = new Document('<html><body>Hello!</body></html>');

// Create a DOM object from a string
$html = new Document();
$html->loadHtml('<html><body>Hello!</body></html>');

// Create a DOM object from a HTML file
$html = new Document();
$html->loadHtmlFile('test.htm');

// Create a DOM object from a URL
$html = new Document(file_get_contents('https://habrahabr.ru/interesting/'));

Как искать HTML DOM элементы?

Основа

// Find all anchors, returns a array of element objects
$ret = $html->find('a');

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

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

// Find all <div> with the id attribute
$ret = $html->find('div[id]');

// Find all <div> which attribute id=foo
$ret = $html->find('div[id=foo]');

Часто используемое

// 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 
$ret = $html->find('a, img'); 

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

Слекторы потомков

// Find all <li> in <ul> 
$es = $html->find('ul li');

// Find Nested <div> tags
$es = $html->find('div div div'); 

// Find all <td> in <table> which class=hello 
$es = $html->find('table.hello td');

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

Вложенные селекторы

// Find all <li> in <ul> 
foreach($html->find('ul') as $ul) 
{
       foreach($ul->find('li') as $li) 
       {
             // do something...
       }
}

// Find first <li> in first <ul> 
$e = $html->find('ul', 0)->find('li', 0);

Фильтр атрибутов

Filter	Description
[attribute]	Matches elements that have the specified attribute.
[!attribute]	Matches elements that don't have the specified attribute.
[attribute=value]	Matches elements that have the specified attribute with a certain value.
[attribute!=value]	Matches elements that don't have the specified attribute with a certain value.
[attribute^=value]	Matches elements that have the specified attribute and it starts with a certain value.
[attribute$=value]	Matches elements that have the specified attribute and it ends with a certain value.
[attribute*=value]	Matches elements that have the specified attribute and it contains a certain value.

Текст, комментарии

// Find all text blocks 
$es = $html->find('text');

// Find all comment (<!--...-->) blocks 
$es = $html->find('comment');

Доступ к атрибутам

Получение, установка и удаление атрибутов

// Get a attribute ( If the attribute is non-value attribute (eg. checked, selected...), it will returns true or false)
$value = $e->href;

// Set a attribute(If the attribute is non-value attribute (eg. checked, selected...), set it's value as true or false)
$e->href = 'my link';

// Remove a attribute, set it's value as null! 
$e->href = null;

// Determine whether a attribute exist? 
if(isset($e->href)) 
        echo 'href exist!';

"Магические" атрибуты

// Example
$html = str_get_html('<div>foo <b>bar</b></div>'); 
$e = $html->find('div', 0);

echo $e->tag; // Returns: "div"
echo $e->outertext; // Returns: "<div>foo <b>bar</b></div>"
echo $e->innertext; // Returns: "foo <b>bar</b>"
echo $e->plaintext; // Returns: "foo bar"

Attribute Name	Usage
$e->tag	Read or write the tag name of element.
$e->outertext	Read or write the outer HTML text of element.
$e->innertext	Read or write the inner HTML text of element.
$e->plaintext	Read or write the plain text of element.

Трюки

// Extract contents from HTML 
echo $html->plaintext;

// Wrap a element
$e->outertext = '<div class="wrap">' . $e->outertext . '<div>';

// Remove a element, set it's outertext as an empty string 
$e->outertext = '';

// Append a element
$e->outertext = $e->outertext . '<div>foo<div>';

// Insert a element
$e->outertext = '<div>foo<div>' . $e->outertext;

Прогон по DOM-дереву

// If you are not so familiar with HTML DOM, check this link to learn more... 

// Example
echo $html->find('#div1', 0)->children(1)->children(1)->children(2)->id;
// or 
echo $html->getElementById('div1')->childNodes(1)->childNodes(1)->childNodes(2)->getAttribute('id');

Method	Description
`mixed` $e->children([int $index])	Returns the Nth child object if index is set, otherwise return an array of children.
`Element` $e->parent()	Returns the parent of element.
`Element` $e->first_child()	Returns the first child of element, or null if not found.
`Element` $e->last_child()	Returns the last child of element, or null if not found.
`Element` $e->next_sibling()	Returns the next sibling of element, or null if not found.
`Element` $e->prev_sibling()	Returns the previous sibling of element, or null if not found.

API-справочник

Методы и свойства DOM

Name	Description
`void` __construct([string	Element $html])
`string` plaintext	Returns the contents extracted from HTML.
`mixed` find (string $selector [, int $index])	Find elements by the CSS selector. Returns the Nth element object if index is set, otherwise return an array of object.

Методы и свойства элементов

Name	Description
`string` [attribute]	Read or write element's attribure value.
`string` tag	Read or write the tag name of element.
`string` outertext	Read or write the outer HTML text of element.
`string` innertext	Read or write the inner HTML text of element.
`string` plaintext	Read or write the plain text of element.
`mixed` find (string $selector [, int $index])	Find children by the CSS selector. Returns the Nth element object if index is set, otherwise, return an array of object.

Прогон по дереву DOM

Name	Description
`mixed` $e->children([int $index])	Returns the Nth child object if index is set, otherwise return an array of children.
`element` $e->parent()	Returns the parent of element.
`element` $e->first_child()	Returns the first child of element, or null if not found.
`element` $e->last_child()	Returns the last child of element, or null if not found.
`element` $e->next_sibling()	Returns the next sibling of element, or null if not found.
`element` $e->prev_sibling()	Returns the previous sibling of element, or null if not found.

camelCase эквиваленты

string $e->getAttribute($name)
string $e->attribute

void $e->setAttribute($name, $value)
void $value = $e->attribute

bool $e->hasAttribute($name)
bool isset($e->attribute)

void $e->removeAttribute($name)
void $e->attribute = null

element $e->getElementById($id)
mixed $e->find("#$id", 0)

mixed $e->getElementsById($id [,$index])
mixed $e->find("#$id" [, int $index])

element $e->getElementByTagName($name)
mixed $e->find($name, 0)

mixed $e->getElementsByTagName($name [, $index])
mixed $e->find($name [, int $index])

element $e->parentNode()
element $e->parent()

mixed $e->childNodes([$index])
mixed $e->children([int $index])

element $e->firstChild()
element $e->first_child()

element $e->lastChild()
element $e->last_child()

element $e->nextSibling()
element $e->next_sibling()

element $e->previousSibling()
element $e->prev_sibling()

dimabdc/php-fast-simple-html-dom-parser 适用场景与选型建议

dimabdc/php-fast-simple-html-dom-parser 是一款基于 PHP 开发的 Composer 扩展包，目前已累计 55.42k 次下载、GitHub Stars 达 90，最近一次更新时间为 2016 年 02 月 02 日，在 PHP 生态内属于活跃度较高的组件。

它主要适用于以下技术方向：「parser」「html」「parse」等业务场景。在实际项目中，围绕这些方向常见需要落地的问题包括：接口对接、性能调优、并发安全、与既有框架（Laravel / ThinkPHP / Yii / Webman 等）的兼容适配，以及生产环境的日志埋点与稳定性保障。

我们在过去多个企业项目中使用过 dimabdc/php-fast-simple-html-dom-parser 或与其功能相近的方案，如果你在选型或落地过程中遇到问题，例如 版本兼容、二次改造、私有化封装、与内部系统对接、生产 BUG 排查，欢迎联系我们协助评估。

围绕 dimabdc/php-fast-simple-html-dom-parser 我们能提供哪些服务？

定制开发 / 二次开发

基于 dimabdc/php-fast-simple-html-dom-parser 在你已有业务上做功能扩展、字段裁剪、UI 适配、与内部账号 / 权限 / 日志系统的深度对接。

BUG 修复 & 性能优化

线上偶发问题、内存泄漏、慢查询、并发异常等排查修复；针对高流量场景做缓存、队列、索引层面的调优。

项目外包 & 长期维护

承接完整的项目从需求 → 设计 → 开发 → 上线 → 长期运维；也可按月提供技术保姆服务。

yvsm@zunyunkeji.com QQ：316430983 微信：yvsm316 西安尊云信息科技 · 专注 PHP / Go / 分布式系统研发

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