Talk about the current situation, prospects and opportunities of web page source code

Why does the newly learned static function return empty data

Problems related to regular collection, solve

##Introduction: Regular collection problems, solutions, online, etc. Target page: http://www.weather.com.cn/weather/101070101.shtml Looking at the source code of its web page, I want to get 425 lines of data, namely "Today is Wednesday, October 16, 2013, the 12th day of the ninth month of the lunar calendar" and 621 lines of "Shenyang Weather Forecast (2013-10-16 18:00 Release)" 

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Introduction: PHP command line running , syntax error information is not listed. When I run the php file on the command line, there is no prompt for syntax errors, and nothing is output. When there are no errors, the running results (webpage source code) can be correctly output. When I configure the debugging function in editplus, no error message is displayed if there is a syntax error. It only outputs "output completed (took 0 seconds) - normal termination". It can be output correctly when there are no errors. May I ask if

16.

##Introduction: How was this place realized? The small speaker in the picture will be displayed when clicked with the mouse, but the word "onclick=" cannot be seen in the source code of the web page. Where is the script that adds "onclick="?                                                                                                                                                       share to: ​ ​ ​ ​ More

17. About issues related to php collecting web page data to obtain js dynamic data

Introduction: About the problem of php collecting web page data to obtain js dynamic data http://www.xjtvs.com.cn/uyghur/special/apply/b/2015-4-28/1430189054690.shtml give one Web page address, I want to get the download address of this video, from Huyu.com, and there is no download address in the source code of the web page. This is the code about the video playback section. Then in the console, you can see the address of the video after loading, which is that &

18. Regularly obtains the keyword and description of the webpage source code, which is a bit painful

Introduction: Regularly obtains the webpage source code keyword and description, the egg is a bit painful Scenario 1: 19. How did this place come to be?

Introduction: How is this implemented? The small speaker in the picture is displayed when clicked with the mouse, but the words "onclick=" are not visible in the source code of the web page. . Where is the script that adds "onclick="?                                             When , syntax exception information is not listed

Introduction: When the PHP command line is running, the syntax error message is not listed. When I run the PHP file on the command line, there is no syntax error, nothing is output, and there are no errors. When I configure the debugging function in editplus, it does not prompt an error message. It only outputs "output completed (took 0 seconds) - normal termination", and there is no error. Can the output be correct?

21. Regular collection related problems, please solve

##Introduction: Regular collection problems, solutions, online, etc. Target page: http://www.weather.com.cn/weather/101070101.shtml View the source code of its web page and want to get 425 lines of data, that is, "Today is 2013 Wednesday, October 16, the 12th day of the ninth month of the lunar calendar" and 621 lines of "Shenyang Weather Forecast (2013-10-16 18:00 Release)" and

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Introduction: Why does the new static function return empty data? Recently I am learning static function and building a code like this. CURL obtains the source code of the web page, and extracts the title, etc. through regular expressions. Why does my code return nothing? What's the problem? Can you explain it in detail? Thanks. $url =23.

Introduction: Please remove div tag PHP, grab After taking the source code of the web page, remove all DIV tags. How to write the regular expression? For example