我有一个基于 Linux 的共享服务器,我面临着一个奇怪的问题。我正在尝试通过 PHP 执行以下命令,并且运行正常;向我返回 PHP 安装路径 /usr/bin/php
。
exec('which php');// This runs so exec is not disabled
但是我尝试使用
exec('php ...');
执行的任何命令都无法随机返回一个包含 98 到 114 个元素的数组,其中几乎到处都是垃圾。我运行的命令示例是...exec('php -v');
exec('php -i');
exec('/usr/bin/php -v');
以上都没有返回一些合理的东西。知道为什么 php 运行的任何命令都没有执行吗?
下面是
var_dump()
返回给我的数据数组的 exec()
。编辑(经过一些 RND)
我能够执行
exec('php -h')
它以可读格式返回给我以下数组。
string(9) "php -help"
string(47) "Usage: php [-q] [-h] [-s] [-v] [-i] [-f ]"
string(27) " php [args...]"
string(36) " -a Run interactively"
string(69) " -b | Bind Path for external FASTCGI Server mode"
string(57) " -C Do not chdir to the script's directory"
string(58) " -c | Look for php.ini file in this directory"
string(47) " -n No php.ini file will be used"
string(56) " -d foo[=bar] Define INI entry foo with value 'bar'"
string(70) " -e Generate extended information for debugger/profiler"
string(46) " -f Parse . Implies `-q'"
string(28) " -h This help"
string(34) " -i PHP information"
string(43) " -l Syntax check only (lint)"
string(43) " -m Show compiled in modules"
string(60) " -q Quiet-mode. Suppress HTTP Header output."
string(60) " -s Display colour syntax highlighted source."
string(33) " -v Version number"
string(72) " -w Display source with stripped comments and whitespace."
string(46) " -z Load Zend extension ."
string(75) " -T Measure execution time of script repeated times."
This page was created in 0.055487155914307 seconds
哦顺便说一句,我用来测试的脚本如下...
<?php
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;
if(!empty($_GET['p']) && $_GET['p'] == true){
//$command = 'php -help'; //this works
//$command = 'cat ' . getcwd() . '/dummy1.txt'; //this works echo's a simple text file
//$command = 'php -q ' . getcwd() . '/dummy1.txt'; //NOT WORKING
$command = 'php -m'; //NOT WORKING
echo '<div><pre>';
var_dump($command);
echo '</pre></div>';
exec($command, $output, $return);
//passthru($command,$output);
echo '<div><pre>';
foreach($output as $key => $value){
var_dump($output[$key]);
}
echo '</pre></div>';
}
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "This page was created in ".$totaltime." seconds";
?>
Pastebin.org Link
最佳答案
它的 PHP CGI 从环境中读取脚本名称,从而导致调用脚本运行多次或有时是无限次。
解决方案只是使用命令 php-cli 而不是命令 php。
在您的代码中用 $command = 'php -m';
替换了 $command = 'php-cli -m';
行,一切都会正常工作。