Question

我有这个PHP代码，我想在网页上打印结果，没有任何内容出现在它但是当我在命令行中运行它时一切正常

<html>
<head>
<title>hello</title>
</head>
<body>
<?php
$str =exec("python mainsummy.py",$output,$return_var);
#return_var int
#output array
var_dump ($output);
print_r($output);
echo "the 4 element \n";
echo $output[4];
print $output[4];
?>
</body>
</html>

这是网页上显示的内容：

array(0) { } Array ( ) the 4 element

以下是CLI中显示的内容：

<html><head><title>hello</title></head><body>array(5) {  [0]=>  string(269) "De jure (/dᵻ ˈdʒʊəriː/, /deɪ-/; Classical Latin: de iure [deː ˈjuːrɛ]) is an expression that means \"of right, by right, according to law\" (literally \"from law\"), as contrasted with de facto, which means \"in fact, in reality\" (literally \"from fact\")."  [1]=>  string(150) "The terms de jure and de facto are used instead of \"in law\" and \"in practice\", respectively, when one is describing political or legal situations."  [2]=>  string(178) "In a legal context, de jure is contrasted to de facto practices, where, for example, the people obey a contract as though there were a law enforcing it, yet there is no such law."  [3]=>  string(95) "Ahmad, however, was in practice (de facto) the actual Sultan, and his brother was a figurehead."  [4]=>  string(117) "Thus, Egypt was by Ottoman law de jure a province of the Ottoman Empire, but de facto was part of the British Empire."}Array(    [0] => De jure (/dᵻ ˈdʒʊəriː/, /deɪ-/; Classical Latin: de iure [deː ˈjuːrɛ]) is an expression that means \"of right, by right, according to law\" (literally \"from law\"), as contrasted with de facto, which means \"in fact, in reality\" (literally \"from fact\").    [1] => The terms de jure and de facto are used instead of \"in law\" and \"in practice\", respectively, when one is describing political or legal situations.    [2] => In a legal context, de jure is contrasted to de facto practices, where, for example, the people obey a contract as though there were a law enforcing it, yet there is no such law.    [3] => Ahmad, however, was in practice (de facto) the actual Sultan, and his brother was a figurehead.    [4] => Thus, Egypt was by Ottoman law de jure a province of the Ottoman Empire, but de facto was part of the British Empire.)the 4 element Thus, Egypt was by Ottoman law de jure a province of the Ottoman Empire, but de facto was part of the British Empire.Thus, Egypt was by Ottoman law de jure a province of the Ottoman Empire, but de facto was part of the British Empire.</body></html>

Answer 1

您应该更新您的exec以确保在运行命令之前以特定用户的身份静默登录，因为这可能是权限问题。

例如（假设你在Linux上）如果你想确保它是由用户运行的那么＆＃34; root＆＃34;有权限......

exec("sudo -u root -S python mainsummy.py",etc,etc);

也可以是＆＃34; mainsummy.py＆＃34;的位置。脚本。在PHP中，您假设它知道文件实际存在的位置。尝试使用它的完整路径。

exec("python '/var/full/path/to/file/mainsummy.py'",etc,etc);

Answer 2

问题是权限服务器端：在/ etc / sudoers

中添加www-data Apache的用户权限时，我解决了我的解决方案

1）nano / etc / sudoers

2）最后添加这一行 www-data ALL = NOPASSWD：ALL

3）就是这样，现在使用exec（）记得在命令之前使用 sudo 。

exec（“sudo python /FULL_PATH/mainsummy.py”，$ output，$ return_var）;

没有var_dump或print_r无法在Web pag中回显

2 个答案: