Question

我正在使用以下代码启动python脚本并将php变量传递给它。

$tmp = exec("python path/to/pythonfile.py $myVariable $mySecondVariable", $output);

这非常有效，我的问题是我需要将100多个变量传递给python脚本。我不希望这个exec行变得非常长且难以管理。我还探讨了使用以下代码传递php数组而不是变量：

$checked = array(
"key1"     => "1"
"key2"     => "1"
"key3"     => "1"
);
$checkedJson = json_encode($checked);
$tmp = exec("python path/to/pythonfile.py $myVariable $checkedJson", $output);

有了这个，我无法在python端解码JSON。我已经能够在python中对数组变量（未解码）进行基本打印，但它将每个单独的字符作为新的数组值。即[0] = k，[1] = e，[2] = y，[3] = 1等... 非常感谢任何帮助。

为了清楚起见，我正在寻找一种比编码和解码数组更简单的方法。有没有办法我可以格式化exec行以允许多个变量。

Answer 1

将PHP变量存储在临时文本文件中，然后使用python读取该文件。

简单有效。

假设脚本位于同一目录

PHP部分

长版本（自包含脚本 - 如果您只需要代码段，请跳至下面的简短版本）

<?php

#Establish an array with all parameters you'd like to pass. 
#Either fill it manually or with a loop, ie:

#Loop below creates 100 dummy variables with this pattern.  
#You'd need to come up with a way yourself to fill a single array to pass
#$variable1 = '1';
#$variable2 = '2';
#$variable3 = '3';
#....
#$variableN = 'N';
#...    
for ($i=1; $i<=100; $i++) {
    ${'variable'.$i} = $i;
}

#Create/Open a file and prepare it for writing
$tempFile = "temp.dat";
$fh = fopen($tempFile, 'w') or die("can't open file");

#let's say N=100
for ($i=1; $i<=100; $i++) {

    #for custom keys 
    $keyname = 'Key'.$i;

    # using a variable variable here to grab $variable1 ... $variable2 ... $variableN     ... $variable100
    $phpVariablesToPass[$keyname] = ${'variable'.$i} + 1000;

}

#phpVariablesToPass looks like this:
# [Key1] => 1001 [Key2] => 1002 [Key3] => 1003  [KeyN] = > (1000+N)


#now write to the file for each value.  
#You could modify the fwrite string to whatever you'd like
foreach ($phpVariablesToPass as $key=>$value) {
    fwrite($fh, $value."\n");
}


#close the file
fclose($fh);

?>

或简而言之，假设$ phpVariablesToPass是一个充满您的值的数组：

#Create/Open a file and prepare it for writing
$tempFile = "temp.dat";
$fh = fopen($tempFile, 'w') or die("can't open file");
foreach ($phpVariablesToPass as $key=>$value) {
    fwrite($fh, $value."\n");
}
fclose($fh);

抓取数据的Python代码段

lines = [line.strip() for line in open('temp.dat')]

变量 lines 现在包含所有php数据作为python列表。

我如何将许多php变量传递给python

1 个答案: