Maintain all values of duplicate keys when parsing .ini file

问题

I have a php.ini file which contains the following lines:

; ...settings

extension=pdo_mysql
extension=pdo_oci

; settings...

So I do this:

var_dump( parse_ini_file( '/path/to/php.ini' )[ 'extension' ] );

But all I get is string(7) "pdo_oci" so it looks like the parse simply maintains the final value which extension was set to.

Is there a way to make the extension key return an array instead?

I understand that PHP's internals probably use a dedicated parser to explicitly handle this situation so that extensions load properly but that does not help me achieve my goal.

回答1:

Since the keys of the ini file become the keys to the array, the values are overridden. I came up with my own function.

The code:

function my_parse_ini($file){
    $arr = array();
    $handle = fopen($file, "r");
    if ($handle) {
        while (($line = fgets($handle)) !== false) {
            $parsed = parse_ini_string($line);
            if(empty($parsed)){ continue; }
            $key = key($parsed);
            if(isset($arr[$key])){
                if(!is_array($arr[$key])){
                    $tmp = $arr[$key];
                    $arr[$key] = array($tmp);
                }
                $arr[$key][] = $parsed[$key];
            }else{
                $arr[$key] = $parsed[$key];
            }
        }
        fclose($handle);
        return $arr;
    } else {
        // error opening the file.
    } 
}

Call it passing the file to be parsed, like so:

$parsed = my_parse_ini('/path/to/php.ini');

The result: ($parsed)

For a file containing

; ...settings

extension=pdo_mysql
extension=pdo_oci

foo=test
bar=ok
foo=teste1
; settings...

This is the output:

Array
(
    [extension] => Array
        (
            [0] => pdo_mysql
            [1] => pdo_oci
        )

    [foo] => Array
        (
            [0] => test
            [1] => teste1
        )

    [bar] => ok
)

来源：https://stackoverflow.com/questions/47820008/maintain-all-values-of-duplicate-keys-when-parsing-ini-file

标签

php

parsing

ini