如何使用PHP读写ini文件

I've been looking around the official php documentation but I'm unable to find what I'm looking for.

我一直在查看官方的php文档，但是我找不到我要找的东西。

http://php.net/manual/en/function.parse-ini-file.php

http://php.net/manual/en/function.parse-ini-file.php

I just want a function to edit and read the value from the php ini file, for instance,

我只是想要一个函数来编辑和读取php ini文件中的值，

[default_colors]
sitebg = #F8F8F8
footerbg = #F8F8F8
link = #F8F8F8
url = #F8F8F8
bg = #F8F8F8
text = #F8F8F8
border = #F8F8F8

lu_link = #F8F8F8
lu_url = #F8F8F8
lu_bg = #F8F8F8
lu_text = #f505f5
lu_border = #F8F8F8

1. How do I read the value belonging to "lu_link" or "footerbg"?
2. 我如何读取属于“lu_link”或“footerbg”的值?
3. How to I write a new value for these places?
4. 如何为这些地方写一个新的值?

6 个解决方案

#1

The PEAR Config_Lite package can do almost all the work (both reading and writing) for you super-easily. Check it out here: http://pear.php.net/package/Config_Lite

PEAR Config_Lite包可以超级轻松地完成几乎所有的工作(读和写)。看看这里:http://pear.php.net/package/Config_Lite

#2

You can simply use parse_ini_file with PHP4/5.

您可以使用PHP4/5简单地使用parse_ini_file。

$ini_array = parse_ini_file("sample.ini");
print_r($ini_array);

Here is the doc: http://php.net/manual/en/function.parse-ini-file.php

下面是doc: http://php.net/manual/en/function.parse-ini-file.php

To write back an array of objects back to the ini file, use below as a very fast & easy solution:

要将一个对象数组写回ini文件，请使用下面的快速简单的解决方案:

function write_php_ini($array, $file)
{
    $res = array();
    foreach($array as $key => $val)
    {
        if(is_array($val))
        {
            $res[] = "[$key]";
            foreach($val as $skey => $sval) $res[] = "$skey = ".(is_numeric($sval) ? $sval : '"'.$sval.'"');
        }
        else $res[] = "$key = ".(is_numeric($val) ? $val : '"'.$val.'"');
    }
    safefilerewrite($file, implode("\r\n", $res));
}

function safefilerewrite($fileName, $dataToSave)
{    if ($fp = fopen($fileName, 'w'))
    {
        $startTime = microtime(TRUE);
        do
        {            $canWrite = flock($fp, LOCK_EX);
           // If lock not obtained sleep for 0 - 100 milliseconds, to avoid collision and CPU load
           if(!$canWrite) usleep(round(rand(0, 100)*1000));
        } while ((!$canWrite)and((microtime(TRUE)-$startTime) < 5));

        //file was locked so now we can store information
        if ($canWrite)
        {            fwrite($fp, $dataToSave);
            flock($fp, LOCK_UN);
        }
        fclose($fp);
    }

}

#3

How about this:

这个怎么样:

 $key='option';
 $val='1.2.3.4.5';
 system("sed  -ie  's/\({$key}=\)\(.*\)/\1{$val}/' file.in");

#4

Below is an implementation of write_ini_file() which PHP is currently lacking, it will create an almost identical (except comments) of the input:

下面是write_ini_file()的实现，这是PHP目前所缺少的，它将创建一个几乎相同的输入(除了注释):

• Supports cross platform (PHP_EOL) new lines added between sections.
• 支持跨平台(PHP_EOL)之间添加的新行。
• Handles both index and key value arrays.
• 处理索引和键值数组。
• Handles CONSTANT style values.
• 处理常数风格值。
• And file locking to stay consistent.
• 和文件锁定保持一致。

Source

源

<?php
if (!function_exists('write_ini_file')) {
    /**
     * Write an ini configuration file
     * 
     * @param string $file
     * @param array  $array
     * @return bool
     */
    function write_ini_file($file, $array = []) {
        // check first argument is string
        if (!is_string($file)) {
            throw new \InvalidArgumentException('Function argument 1 must be a string.');
        }

        // check second argument is array
        if (!is_array($array)) {
            throw new \InvalidArgumentException('Function argument 2 must be an array.');
        }

        // process array
        $data = array();
        foreach ($array as $key => $val) {
            if (is_array($val)) {
                $data[] = "[$key]";
                foreach ($val as $skey => $sval) {
                    if (is_array($sval)) {
                        foreach ($sval as $_skey => $_sval) {
                            if (is_numeric($_skey)) {
                                $data[] = $skey.'[] = '.(is_numeric($_sval) ? $_sval : (ctype_upper($_sval) ? $_sval : '"'.$_sval.'"'));
                            } else {
                                $data[] = $skey.'['.$_skey.'] = '.(is_numeric($_sval) ? $_sval : (ctype_upper($_sval) ? $_sval : '"'.$_sval.'"'));
                            }
                        }
                    } else {
                        $data[] = $skey.' = '.(is_numeric($sval) ? $sval : (ctype_upper($sval) ? $sval : '"'.$sval.'"'));
                    }
                }
            } else {
                $data[] = $key.' = '.(is_numeric($val) ? $val : (ctype_upper($val) ? $val : '"'.$val.'"'));
            }
            // empty line
            $data[] = null;
        }

        // open file pointer, init flock options
        $fp = fopen($file, 'w');
        $retries = 0;
        $max_retries = 100;

        if (!$fp) {
            return false;
        }

        // loop until get lock, or reach max retries
        do {
            if ($retries > 0) {
                usleep(rand(1, 5000));
            }
            $retries += 1;
        } while (!flock($fp, LOCK_EX) && $retries <= $max_retries);

        // couldn't get the lock
        if ($retries == $max_retries) {
            return false;
        }

        // got lock, write data
        fwrite($fp, implode(PHP_EOL, $data).PHP_EOL);

        // release lock
        flock($fp, LOCK_UN);
        fclose($fp);

        return true;
    }
}

Example input .ini file (taken from http://php.net/manual/en/function.parse-ini-file.php)

示例输入.ini文件(取自http://php.net/manual/en/function.parse-ini-file.php)

; This is a sample configuration file
; Comments start with ';', as in php.ini

[first_section]
one = 1
five = 5
animal = BIRD

[second_section]
path = "/usr/local/bin"
URL = "http://www.example.com/~username"

[third_section]
phpversion[] = "5.0"
phpversion[] = "5.1"
phpversion[] = "5.2"
phpversion[] = "5.3"

urls[svn] = "http://svn.php.net"
urls[git] = "http://git.php.net"

Example usage:

使用示例:

// load ini file values into array
$config = parse_ini_file('config.ini', true);

// add some additional values
$config['main']['foobar'] = 'baz';
$config['main']['const']['a'] = 'UPPERCASE';
$config['main']['const']['b'] = 'UPPER_CASE WITH SPACE';
$config['main']['array'][] = 'Some Value';
$config['main']['array'][] = 'ADD';
$config['third_section']['urls']['docs'] = 'http://php.net';

// write ini file
write_ini_file('config.ini', $config);

Resulting .ini file:

生成的. ini文件:

[first_section]
one = 1
five = 5
animal = BIRD

[second_section]
path = "/usr/local/bin"
URL = "http://www.example.com/~username"

[third_section]
phpversion[] = 5.0
phpversion[] = 5.1
phpversion[] = 5.2
phpversion[] = 5.3
urls[svn] = "http://svn.php.net"
urls[git] = "http://git.php.net"
urls[docs] = "http://php.net"

[main]
foobar = "baz"
const[a] = UPPERCASE
const[b] = "UPPER_CASE WITH SPACE"
array[] = "Some Value"
array[] = ADD

#5

Here's a functional version that creates a string that can be written to a file.

这里有一个功能版本，它创建一个可以写入文件的字符串。

function IniAsStr(array $a) : string
{
    return array_reduce(array_keys($a), function($str, $sectionName) use ($a) {
        $sub = $a[$sectionName];
        return $str . "[$sectionName]" . PHP_EOL .
            array_reduce(array_keys($sub), function($str, $key) use($sub) {
                return $str . $key . '=' . $sub[$key] . PHP_EOL;
            }) . PHP_EOL;
      });
}

#6

You can simply use ini_set('lu_link','#000000'); or ini_get('lu_link').

您可以简单地使用ini_set('lu_link'，'#000000');或ini_get(“lu_link”)。

I feel, if you have limited PHP experience, it's not good to mess with the .ini file.

我认为，如果您有有限的PHP经验，那么最好不要打乱.ini文件。