When using a php crawler, you must use the cli environment
I checked the current php version information as follows:
I print PHP_SAPI
show fpm-fcgi
How to become cli
The server environment is linux+nginx
Supplement: Can I understand that cli must be in command line mode?
Just tested PHP_SAPI
in the command line and output cli
Question: Can http simulation call be implemented to implement cli
When using a php crawler, you must use the cli environment
I checked the current php version information as follows:
I print PHP_SAPI
show fpm-fcgi
How to become cli
The server environment is linux+nginx
Supplement: Can I understand that cli must be in command line mode?
Just tested PHP_SAPI
in the command line and output cli
Question: Can http simulation call be implemented to implement cli
CLI = command-line interface = command line interface
You can use popen or proc_open in php-fpm to asynchronously call php-cli to execute a php script, such as:
<code>例子1(popen): <?php function foo() { echo date('Y-m-d H:i:s')."\n"; echo shell_exec('php -r \'sleep(1); echo date("Y-m-d H:i:s")." by shell_exec:blocking\n";\''); //阻塞 $pipe1 = popen('php -r \'sleep(2); echo date("Y-m-d H:i:s")." by popen1:non-blocking\n";\'', 'r'); //非阻塞(管道) $pipe2 = popen('php -r \'sleep(1); echo date("Y-m-d H:i:s")." by popen2:non-blocking\n";\'', 'r'); //非阻塞(管道) echo date('Y-m-d H:i:s')."\n"; register_shutdown_function(function() use ($pipe1, $pipe2) { //事件驱动(脚本结束事件),异步回调 echo stream_get_contents($pipe1); //输出子进程返回的数据 echo stream_get_contents($pipe2); //输出子进程返回的数据 pclose($pipe1); pclose($pipe2); }); } foo(); //输出 2016-09-11 20:25:30 2016-09-11 20:25:31 by shell_exec:blocking 2016-09-11 20:25:31 2016-09-11 20:25:33 by popen1:non-blocking 2016-09-11 20:25:32 by popen2:non-blocking 例子2(proc_open): PHP用proc_open新建子进程使用管道通信非阻塞执行PHP脚本. 脚本结束时register_shutdown_function回调函数访问管道获取子进程输出的数据. <?php function foo() { $proc = proc_open( //task.php 内容为 $arr = unserialize(stream_get_contents(STDIN)); $arr['time'] = date('Y-m-d H:i:s', $arr['time']); echo serialize($arr); '/png/php/5.4.45/bin/php /home/eechen/task.php', array( 0 => array('pipe','r'), //stdin (用fwrite写入数据给管道) 1 => array('pipe','w'), //stdout(用stream_get_contents获取管道输出) 2 => array('pipe','w'), //stderr(用stream_get_contents获取管道输出) //2 => array('file','/tmp/err.txt','a') //stderr(写入到文件) ), $pipes, //管道(stdin/stdout/stderr) '/tmp', //当前PHP进程的工作目录 array('foo' => 'bar') //php.ini 配置 variables_order = "EGPCS" 其中E表示$_ENV,否则$_ENV输出为空 ); //var_dump($pipes); //resource of type (stream) if(is_resource($proc)) { //stdin $stdin = serialize(array('time' => time())); fwrite($pipes[0], $stdin); //把参数传给脚本task.php fclose($pipes[0]); //fclose关闭管道后proc_close才能退出子进程,否则会发生死锁 register_shutdown_function(function() use($pipes, $proc) { //事件驱动(脚本结束事件),异步回调 //stdout $stdout = stream_get_contents($pipes[1]); fclose($pipes[1]); //stderr $stderr = stream_get_contents($pipes[2]); fclose($pipes[2]); //exit code (返回进程的终止状态码,如果发生错则返回-1) $status = proc_close($proc); $data = array( 'stdout' => $stdout, 'stderr' => $stderr, 'status' => $status, ); var_export($data); //echo json_encode($data); }); } } foo(); //输出: array ( 'stdout' => 'a:1:{s:4:"time";s:19:"2016-09-11 21:26:29";}', 'stderr' => '', 'status' => 0, )</code>
cli is the command line, and under Linux it is the php
command. There are many ways to execute the command line in php. You can use functions such as exec
to execute it synchronously. There are also methods to execute it asynchronously. Please read the documentation in detail
Just run the script directly using the terminal