PHP generated PDF

A project needs to use a Web page to generate a PDF, which is to generate a PDF file of the entire page,

Used to be html2pdf, can only generate some simple HTML code, complex HTML + CSS generated by the effect of a miserable,

Baidu a bit, found that there is a wkhtmltopdf,wkhtmltoimage, download to try it, sure enough, you can make the page intact as a PDF file, fully meet the project requirements.

But this is a command-line program, and the next thing is the point.

Wkhtmltopdf is a program executed at the command line, PHP can execute the command through Exec,system and so on, I have tried it, I can use it, can call Wkhtmltopdf to generate PDF file,

But the efficiency is too low, the generation is too slow, the test is a person, the generation of a file, if the production environment a lot of people at the same time, the estimate certainly not.

But executing the wkthmltopdf command directly at the command line is fast.

How to solve the efficiency problem.

Also did not think of any good method, my solution to the idea:

will need to generate the URL, commit to save to the database, and then write a command line execution of the PHP script, read the table needs to generate the record, if so, the call command generation file, the script is set to 5 seconds to execute the time,

on the Web page, write a Ajxa poll, 1 seconds at a time, to detect whether the file has been generated .

This solves the problem.

Although not perfect, but the project is really available, if the speed requirements of a bit higher can be PHP execution 3 seconds once, 2 seconds. should be faster. This has not been tried.

PHP generated PDF