10 Articles about content pictures recommended

When crawling the content of a single Web site, regular matching is usually used, but the structure of different sites is strange and difficult to match with a uniform regular expression. The author of the general Web page body extraction algorithm based on the block distribution function summarizes the method of extracting the body of the article from the Web page, proposes the text extraction algorithm based on the block distribution, and gives the implementation of PHP and Java. The main principle of this algorithm is based on two points: 1, the body area density: After all the tags in the HTML, the text area character density is higher, less multiple lines blank; 2, the length of the BLOCK: the contents of the non-body area are generally shorter in individual labels (row blocks). The algorithm steps are as follows: 1, the removal of all tags, including the style, JS script content, but retain the original line break \n2, the page content is divided into rows, the definition of the row block $block _i$ for the first $[i, i + blocksize]$ line of text and the sum of the travel block length based on the distribution function of the row number: 3, The body appears in the longest row block, intercepting both sides to the line block length of 0 of the range: 4, if you need to extract the picture of the body area, only need to remove the tag when the first step to preserve <im

1. "Python Tutorial" Web page body and content image extraction algorithm

Introduction: Crawling The content of a single Web site is usually a regular match, but the structure of different sites are strange, it is difficult to use a uniform regular expression to match. The author of the general Web page body extraction algorithm based on the block distribution function summarizes the method of extracting the body of the article from the Web page, proposes the text extraction algorithm based on the block distribution, and gives the implementation of PHP and Java. The main principle of this algorithm is based on two points:

2. Page snapshot where PHP generates a webpage snapshot without COM without extension

Summary: Web page snapshot where: page snapshot where PHP generates a Web page snapshot without com without extension: Code copy Code code is as follows: <?php $url = ' www.baidu.com '; Crawl Baidu Echo Snapshot ($url); The output is the image address echo snapshot ($url, './baidu.png '); Save picture to local baidu.png, output content picture size/** * Generate a webpage snapshot * * @param string $site target Address * @par

3. PHP100 Essence: PHP generates a webpage snapshot _php tutorial

Introduction: PHP100 Extract: PHP generates a snapshot of a webpage. php $url = www.baidu.com; Crawl Baidu Echo Snapshot ($url); The output is the image address echo snapshot ($url,./baidu.png); Save picture to local baidu.png, output content picture

4. Upload image, database content picture no suffix.

Introduction: Upload images, database content picture no suffix.

5. Phpcms article content picture thumbnail steps

Introduction: Phpcms article content image thumbnail method in/phpcms/modules/content/index.php to modify the method is to match the IMG image address, zoom and replace with the thumb to show it. In the show () method, modify $content?content = Preg_replace ('/]*src=[' "]? ( [^

6. Phpcms article content picture thumbnail steps

Introduction: Phpcms article content image thumbnail method in/phpcms/modules/content/index.php to modify the method is to match the IMG image address, zoom and replace with the thumb to show it. In the show () method, modify $content?content = Preg_replace ('/]*src=[' "]? ( [^> ' "

7. PHP100 Extract: PHP generates a snapshot of a webpage

Introduction: PHP100 Extract: PHP generates a snapshot of a webpage. php $url = www.baidu.com; Crawl Baidu Echo Snapshot ($url); The output is the image address echo snapshot ($url,./baidu.png); Save picture to local baidu.png, output content picture

8. PHP get FCK Content Image code

Introduction: I think a lot of webmaster know FCK This editor, FCK is an online document editor, upload pictures are not saved to the database, so we have to find a way to get it out, here is a regular FCK input image field code.

9. PHP Extract article content image address regular expression

Introduction: EC (2); The code below copies the code <!doctype HTML Public "-//W3C//DTD XHTML 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/ Xhtml1-transitional.dtd ">

PHP collects remote images to local implementation code

Introduction: In PHP to save the remote image to their own server locally, we need a regular string of content picture, and then use the relevant function to read and save the image to the local hard disk.

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