How to update an ini file with php?

Question

I have an existing ini file that I have created and I would like to know if there was a way to update a section of the file or do I have have to rewrite the entire file each time?

Here is an example of my config.ini file:

[config]
    title='test'
    status=0
[positions]
    top=true
    sidebar=true
    content=true
    footer=false

Say I want to change the [positions] top=false. So would I use the parse_ini_file to get all of the infromation then make my changes and use fwrite to rewrite the whole file. Or is there a way just to change that section?

Answer 1

I used the first suggestion of you:

So would I use the parse_ini_file to get all of the infromation then make my changes and use fwrite to rewrite the whole file

function config_set($config_file, $section, $key, $value) {
    $config_data = parse_ini_file($config_file, true);
    $config_data[$section][$key] = $value;
    $new_content = '';
    foreach ($config_data as $section => $section_content) {
        $section_content = array_map(function($value, $key) {
            return "$key=$value";
        }, array_values($section_content), array_keys($section_content));
        $section_content = implode("\n", $section_content);
        $new_content .= "[$section]\n$section_content\n";
    }
    file_put_contents($config_file, $new_content);
}