10 recommended articles about content images

Regular matching is usually used when crawling the web content of a single website. However, the structures of different websites are so strange that it is difficult to match them with a unified regular expression. The author of "General Web Page Text Extraction Algorithm Based on Line Block Distribution Function" summarized the general methods of extracting article text from web pages, proposed a text extraction algorithm based on line block distribution, and provided implementations in PHP, Java, etc. The main principles of this algorithm are based on two points: 1. Text area density: after removing all tags in HTML, the character density in the text area is higher and there are fewer multiple lines of blanks; 2. Line block length: the content in non-text areas is average Shorter in individual labels (line blocks). The algorithm steps are as follows: 1. Remove all tags, including styles, Js script content, etc., but retain the original line breaks\n2. Split the web page content by lines, and define the line block $block_i$ as the first $[i, i + blockSize ]$ The sum of lines of text and gives the distribution function of line block length based on line numbers: 3. The text appears in the longest line block, intercept the range from both sides to the line block length of 0: 4. If you need to extract the pictures that appear in the text area , you only need to keep

1 when removing the tag in the first step. [python tutorial] Web page text and content image extraction algorithm

#Introduction: Regular matching is usually used when crawling the web content of a single website. However, the structures of different websites are so strange that it is difficult to use unified regular expressions. formula to match. The author of "General Web Page Text Extraction Algorithm Based on Line Block Distribution Function" summarized the general methods of extracting article text from web pages, proposed a text extraction algorithm based on line block distribution, and provided implementations in PHP, Java, etc. The main principle of this algorithm is based on two points:

2. Where is the web page snapshot? PHP generates web page snapshots without COM or extensions

Introduction: Where is the web page snapshot: Where is the web page snapshot? PHP generates web page snapshots without COM or extensions: Code copy code is as follows:

3. PHP100 Essence: PHP generates web page snapshot_PHP tutorial

Introduction: PHP100 essence: PHP generates web page snapshots. ?php $url = www.baidu.com; //Catch Baidu echo snapshot($url); //The output result is the image address echo snapshot($url, ./baidu.png); //Save the image locally baidu.png, output content image

4. Upload the image, the database content image has no suffix.

Introduction: Upload pictures, database content pictures without suffix.

5. phpcms Article content image abbreviation steps

Introduction: phpcms Article content image abbreviation method ​ Modify in /phpcms/modules/content/index.php The method is to match the img image address, use thumb to zoom and replace it and display it. ? ? In the show() method, modify $content ? content = preg_replace('/]*src=['"]?([^

6. phpcms Article content image thumbnail steps

Introduction: phpcms article content image abbreviation method. The modification method in /phpcms/modules/content/index.php is to match the img image address and use thumb to zoom and replace it. Show it. ??In the show() method, modify $content?content = preg_replace('/]*src=['"]?([^>'"

7. PHP100 Essence: PHP generates web page snapshots

##Introduction: PHP100 Essence: PHP generates web page snapshots?php $url = www. .baidu.com; //Catch Baidu echo snapshot($url); //The output result is the image address echo snapshot($url, ./baidu.png); //Save the image to local baidu.png and output the content Picture

8. php Get fck content picture code

Introduction: I think many webmasters know the editor fck. fck is an online document editor. The uploaded pictures will not be saved in the database, so we have to find a way to regularize it. , the following is the code for a regular fck input image field.

9. php extract article content image address regular expression

Introduction: ec(2); ​ code show as below Copy code ​ ​

10. PHP collects remote images to local implementation code

Introduction: To save in php To transfer remote images to the local server, we need to first regularize the content image in the string, and then use related functions to read and save the image to the local hard disk.

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