How to access a String function with PHP? - php

Question

I am using the PHP CSS preprocessor CssCrush for the first time and I am needing to implement the csscrush_string() function into my custom assets manager. Previously I was using CssMin but now I need use of the preprocessor.
The following snippet below obviously has a syntax error at $data = csscrush_string( string $string [, array $options ] ); and I do not know how to correct it.
I have also tried: $data = Crush::csscrush_string(); but I get PHP Fatal error: Class 'Crush' not found... even-though Crush is a class.
Using CssCrush (replacing CssMin):
<?php
private function process_resource($file, $type)
{
//...Files are combined and dumped into $data up here
// before running the preprocessor and minifier...
$data = str_replace($keys, $vals, $data);
$css_lib = VENDOR_DIR . "css-crush/css-crush/CssCrush.php";
if ($this->settings[$type]["minify"])
{
require $css_lib;
$data = csscrush_string( string $string [, array $options ] );
$data = trim($data);
}
}
Using CssMin (works):
<?php
$data = str_replace($keys, $vals, $data);
css_lib = VENDOR_DIR . "natxet/CssMin/src/CssMin.php";
if ($this->settings[$type]["minify"])
{
require $css_lib;
$data = CssMin::minify($data);
$data = trim($data);
}

Answer 1

It just guess because I don't know what $data contains but it seems to be string
change
$data = csscrush_string( string $string [, array $options ] );
$data = trim($data);
to
$data = csscrush_string(trim($data));
I've checked source of this function and there is only one option to be passed called 'boilerplate' if you want to pass it then you should invoke function as below
$data = csscrush_string(trim($data), array('boilerplate' => true));
Also consider that this function is within namespace so you should put
use \CssCrush\Crush\csscrush_string; or class function like
$data = \CssCrush\Crush\csscrush_string(trim($data));