10 articles about phppopen () functions are recommended.

1. how does PHPpopen implement concurrent execution of multiple processes? the pclose in the loop will wait until the process is completed and then perform the next loop. 2. suppose there are 17 processes to be enabled, how to start 5 processes each time, and shut down a process every time a process is completed, and start the next process at the same time, that is to say, only five processes can start two processes at the same time for ($ i0; $ I & amp; lt; 2; $ I ++) {& amp; nbsp; & amp; nbsp; $ command & amp; quot; $ phpPath... 1.PHP popen how to implement multi-process concurrent execution, the pclose in the loop will wait for the process to complete and then carry out the next loop 2. suppose there are 17 processes to be enabled, how to start 5 processes each time, and shut down a process every time a process is completed, and start the next process at the same time, that is to say, only five processes can run at the same time // start two processes for ($ I = 0; $ I <2; $ I ++) {$ command = "$ phpPath $ destPHPFile> $ logFile $ I"; echo "process start time ". date ('Y-m-d H: I: s '). "\ n"; $ resource = popen ($ command, 'r'); if (is

1. recommended articles on php pclose () functions

Introduction: 1.PHP popen implements concurrent multi-process execution. the pclose in the loop will wait until the process is completed and then perform the next loop. 2. suppose there are 17 processes to be enabled, how to start 5 processes each time, and shut down a process every time a process is completed, and start the next process at the same time, that is to say, only five processes can run at the same time // start two processes for ($ I = 0; $ I <2; $ I ++) {$ command = "$ phpPath $ destPHPFile> $ logF...

2. how does popen implement concurrent execution of multiple processes? the pclose in the loop will wait until the process is completed and then perform the next loop.

Introduction: 1.PHP popen implements concurrent multi-process execution. the pclose in the loop will wait until the process is completed and then perform the next loop. 2. suppose there are 17 processes to be enabled, how to start 5 processes each time, and shut down a process every time a process is completed, and start the next process at most...

3. the problem that ffmpeg-php uses the popen method to implement asynchronous operations

Introduction: This method uses popen to perform a video transcoding operation. To enable asynchronous transcoding execution, how can we know that this sentence has been completed. That is, how can I know that transcoding is complete.

4. question about asynchronous operations using the popen method in php

Introduction: This method uses popen to perform a video transcoding operation. To enable asynchronous transcoding execution, how can we know that this sentence has been completed. That is, how can I know that transcoding is complete.

5. the popen function calls the local script and transmits parameters.

Introduction: The boss asked me to implement a php asynchronous mail function. I found the information on the internet and found that I could use popen. so I initially wrote the following code: {code ...} this script is an account that uses phpmailer to send an email to me. Now you want to pass a parameter to this function: $ to -- recipient $ content...

6. how to get the root permission of the mobile phone to allow PHP to execute system commands with the ROOT permission

Introduction: how to get the root permission of the mobile phone to allow PHP to execute system commands with the ROOT permission: it serves as a reference for php to execute commands or applications that common users cannot execute with root permissions. In fact, the popen () function in php can solve this problem, but because some versions of linux (such as Centos 5 I use) have considerations for system security, this makes it a lot of trouble to solve the problem. Let's take a look at an example of using the popen () function. The code is as follows:/* Add a system user in PHP. Below is a routine, add a user named james, roo

7. full parsing of PHP dangerous functions

Brief introduction: PHP dangerous function full parsing: PHP parsing support for CLI command line mode cannot be compiled unless otherwise required. You can use-disable-CLI during compilation. Once PHP in CLI mode is compiled, attackers may use this program to create a WEB Shell backdoor process or execute arbitrary code through PHP. Phpinfo () function description: outputs information about the PHP environment, related modules, and WEB environment. Hazard level: passthru () function description: allow execution

8. how to run system commands with the ROOT permission of PHP _ PHP Tutorial

Introduction: how to allow PHP to execute system commands as ROOT. It serves as a reference for php to execute commands or applications that common users cannot execute with root permissions. In fact, the popen () function in php can solve this problem, but because some versions

9. linux exec and shell_exec function _ PHP Tutorial

Introduction: linux exec and shell_exec functions .? Php Tutorial $ test = ls/tmp/test; $ out = shell_exec ($ test); echo $ out ;? The returned results of popen, passthru, proc_open, and shell_exec are as follows: [root @ krlcgcms01 shell] # php test. php 1001.log 1

10. php popen multitasking _ PHP Tutorial

Introduction: php popen supports multiple tasks. Php code? Php $ update_num = 1000; $ limit = 100; $ p_num = 0; $ line_cmd = ps-ef | grep doit. php | grep-v grep | wc-l; $ exec_cmd =/usr/local/php/bin/php doit. php % s/dev/null 21;

[Related Q & A recommendations ]:

Popen is blocked

How does php-popen implement concurrent execution of multiple processes? the pclose in the loop will wait until the process is completed and then perform the next loop.

The problem of using the popen method to implement asynchronous operations in ffmpeg-php

How does popen implement multi-process concurrent execution? the pclose in the loop will wait for the process to complete and then perform the next loop.

Python-IOError: [Errno 32] Broken pipe

The above is a detailed article about the php popen () function. For more information, see other related articles in the first PHP community!