README

PHPPowertools 是一个适用于 PHP >= 5.4 的 Web 应用程序框架。

PHPPowertools/DOM-Query 是 PHPPowertools 首个对外发布的组件。

此组件的目的是提供一个类似 jQuery 的接口来爬取 XML 和 HTML 文档。在底层，它使用 symfony/CssSelector 将 CSS 选择器 转换为 XPath 查询

jQuery 方式

// Find the elements that match selector 'div.foo'
$s = $('div.foo');

// Pass an element object (DOM Element)
$s = $(document.body);

// Pass a jQuery object
$s = $($('p + p'));

DOM-Query 方式

namespace App;
use \PowerTools\DOM_Query;

// Get file content
$htmlcode = file_get_contents('https://github.com');

// Create a new DOM_Query instance, using a string as a source
$H = new DOM_Query($htmlcode);

// Create a new DOM_Query instance, using an existing DOM_Query instance as a source
$H = new DOM_Query($H->select('body'));

// Find the elements that match selector 'div.foo'
$s = $H->select('div.foo');

// Pass an element object (DOM Element)
$s = $H->select($documentBody);

// Pass a DOM Query instance
$s = $H->select($H->select('p + p'));

示例用法

// Select the body tag
$body = $H->select('body');

// Combine different classes as one selector to get all site blocks
$siteblocks = $body->select('.site-header, .masthead, .site-body, .site-footer');

// Nest your methods just like you would with jQuery
$siteblocks->select('button')->add('span')->addClass('icon icon-printer');

// Use a lambda function to set the text of all site blocks
$siteblocks->text(function($i, $val) {
    return $i . " - " . $val->attr('class');
});

// Append the following HTML to all site blocks
$siteblocks->append('<div class="site-center"></div>');

// Use a descendant selector to select the site's footer
$sitefooter = $body->select('.site-footer > .site-center');

// Set some attributes for the site's footer
$sitefooter->attr(array('id' => 'aweeesome', 'data-val' => 'see'));

// Use a lambda function to set the attributes of all site blocks
$siteblocks->attr('data-val', function($i, $val) {
    return $i . " - " . $val->attr('class') . " - photo by Kelly Clark";
});

// Select the parent of the site's footer
$sitefooterparent = $sitefooter->parent();

// Remove the class of all i-tags within the site's footer's parent
$sitefooterparent->select('i')->removeAttr('class');

// Wrap the site's footer within two nex selectors
$sitefooter->wrap('<section><div class="footer-wrapper"></div></section>');

[...]

支持的方法

• $ (1)
• $.parseHTML
• $.parseXML
• $.parseJSON
• $selection.add
• $selection.addClass
• $selection.after
• $selection.append
• $selection.attr
• $selection.before
• $selection.children
• $selection.closest
• $selection.contents
• $selection.detach
• $selection.each
• $selection.eq
• $selection.empty (2)
• $selection.find
• $selection.first
• $selection.get
• $selection.hasClass
• $selection.insertAfter
• $selection.insertBefore
• $selection.is
• $selection.last
• $selection.parent
• $selection.parents
• $selection.remove
• $selection.removeAttr
• $selection.removeClass
• $selection.text
• $selection.wrap

1. 重命名为 'select'，显而易见的原因
2. 重命名为 'void'，因为 'empty' 是 PHP 中的保留词

作者