从PHP源获取数组键和值

Question

I'm writing a config editor. I'm reading in the file with fopen and fgets line by line. I want to get the array keys and values from the string. I'm not familiar with regex thats why i'm asking.

Example config file:

$conf['something'] = 'value';
$conf['other_thing']['another_key'] = 3000;

I can't loop through the $conf array, as it is a SuperObject in the system, and holds many additional datas, even inited classes...

Answer 1

I would do smth like this:

// get config file as a variable
require_once('config_file.php');

// get keys
$keys = array_keys($conf);

// get config file as a variable
$values = array_values($conf);

Answer 2

While not direct answer to your question but as you wrote "I'm writing a config editor." then I assume you also write this config file down. So assuming your editor keeps config in $conf array while it works, I'd just dump it as JSON instead of your PHP code:

file_put_contents('config.json', json_encode($conf));

and then read it back when needed

$conf = json_decode( file_get_contents('config.json') );

Answer 3

\\$conf\\['(.*?)']\\s+=\\s+'(.*?)'; here is your pattern. Key is in the group 1 and value is in the group 2.

$ , [ and ] are special characters that's why you should escape them. \\s+ means whitespace characters 1 or more times.

Answer 4

Here is your regex:

\$conf(\[('.*')\])+\s?=\s?(.*);

The first matches are your keys, last one your value

Answer 5

As this is php array you can directly loop through it, and get required key value pairs else you can you can use php's functions array_keys for fetching all keys from the $conf array and array_values for getting array values

or else

if you want to create a config editor try using ini file php has a good support for creating and using config files see this function parse_ini_file this is a standard way for creating config file if you have too key value pairs