Using a library in php: class not found

Question

I'm trying to use this library: https://github.com/duzun/hQuery.php

My project is ordonated like this:

BetCompare
  Application
    Teams
      file_using_the_library.php
      hQueryLib
        hquery.php

So here is how I'm using it in my php file:

namespace BetCompare\Application\Teams;
use BetCompare\Application\Teams\hQueryLib\hquery;

hQuery::$cache_path = "/path/to/cache";

This returns an error Class not found. I've tried this after a few researches on the matter:

namespace BetCompare\Application\Teams;
use BetCompare\Application\Teams\hQueryLib\hquery;
include_once 'hQueryLib/hquery.php';

hQuery::$cache_path = "/path/to/cache";

Then the error is the following: Cannot declare class hQuery_Context, because the name is already in use. I don't understand, the second error makes it look like the use was enough and loaded the class. But I can't use it... What am I doing wrong?

I've also tried only using include_once but it doesn't work.

score 4 · Accepted Answer · 2018-02-16 21:38:22Z

4

Either like this (with namespace duzun\hQuery):

<?php

namespace BetCompare\Application\Teams;

use duzun\hQuery;

include_once 'hQueryLib/hquery.php';
hQuery::$cache_path = "/path/to/cache";

or like this, without the namespace:

<?php

namespace BetCompare\Application\Teams;

include_once 'hQueryLib/hquery.php';
\hQuery::$cache_path = "/path/to/cache";

Your code can not work, because if you write

use BetCompare\Application\Teams\hQueryLib\hQuery;

you are practically assuming, that the hQuery class has the namespace definition

namespace BetCompare\Application\Teams\hQueryLib;

which it does not have (beeing a third-party class).

The part with the duzun\hQuery is defined in the last lines of the hQuery.php file and described in the docus.

edited Feb 16, 2018 at 21:38

answered Feb 16, 2018 at 21:28

user7941334

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2 Comments

pioupiou1211 Over a year ago

Oh I see, now it works! Thank you very much for the explanations.

user7941334 Over a year ago

You are welcome. Actually, If you read the additional text in the answer, you will discover that they provide a namespace for the class in a dynamical way, using class_alias(). Which is unfortunate, since you must have the docus beforehand, or know what those lines do.

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