Summary of common functions for executing linux commands in PHP, summary of phplinux commands_PHP tutorial

Summary of commonly used functions for PHP to execute linux commands, summary of phplinux commands

Under normal circumstances, php is rarely used to execute linux commands, but under special circumstances, you may use it these functions. I used to know that there are two functions that can execute linux commands, one is exec and the other is shell_exec. In fact, there are many. Based on the content of the manual, the following 6 functions are introduced.

1, exec function

<&#63;php 
$test = "ls /tmp/test"; //ls是linux下的查目录，文件的命令
exec($test,$array); //执行命令
print_r($array);
&#63;>

The returned results are as follows:

[root@krlcgcms01 shell]# php ./exec.php 
Array 
( 
[0] => 1001.log 
[1] => 10.log 
[2] => 10.tar.gz 
[3] => aaa.tar.gz 
[4] => mytest 
[5] => test1101 
[6] => test1102 
[7] => weblog_2010_09 
)

2, system function

<&#63;php 
$test = "ls /tmp/test";
$last = system($test);
print "last: $last\n";
&#63;>

Return results:

[root@krlcgcms01 shell]# php system.php 
1001.log 
10.log 
10.tar.gz 
aaa.tar.gz 
mytest 
test1101 
test1102 
weblog_2010_09 
last:weblog_2010_09

3, passthru function

<&#63;php 
$test = "ls /tmp/test";
passthru($test);
&#63;>

4, popen function

<&#63;php 
$test = "ls /tmp/test";
$fp = popen($test,"r"); //popen打一个进程通道

while (!feof($fp)) { //从通道里面取得东西
$out = fgets($fp, 4096);
echo $out; //打印出来
} 
pclose($fp);
&#63;>

5, proc_open function

<&#63;php 
$test = "ls /tmp/test";
$array = array(
array("pipe","r"), //标准输入 
array("pipe","w"), //标准输出内容 
array("pipe","w") //标准输出错误 
); 
$fp = proc_open($test,$array,$pipes); //打开一个进程通道
echo stream_get_contents($pipes[1]); //为什么是$pipes[1]，因为1是输出内容
proc_close($fp);
&#63;>

6, shell_exec function

<&#63;php 
$test = "ls /tmp/test";
$out = shell_exec($test);
echo $out;
&#63;>

The return results of popen, passthru, proc_open, shell_exec are as follows:

[root@krlcgcms01 shell]# php test.php 
1001.log 
10.log 
10.tar.gz 
aaa.tar.gz 
mytest 
test1101 
test1102 
weblog_2010_09

These are the only functions I can find that can execute commands under Linux. I think there should be more. Welcome to add.

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• Instructions for using common functions of PHP to execute Linux system commands
• How to support PHP’s iconv() function on Linux system
• Use PHP script to encrypt strings with md5 function under Linux

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