Composer autoloader not loading GuzzleHttp\ClientInterface

Question

I'm trying to use Guzzle, but I'm getting the following fatal error:

Fatal error: Class 'GuzzleHttp\ClientInterface' not found in /var/www/myapp/vendor/guzzlehttp/guzzle/src/functions.php on line 13

I'm autoloading with composer autoloader:

require 'vendor/autoload.php';

use Guzzle\Http\Client;

$client = new Client();

$requests = Array(
    $client->createRequest('GET', 'ams1.myapp.com:8080/api/ffmpeg_make_snapshots.php'),
    $client->createRequest('GET', 'ams2.myapp.com:8080/api/ffmpeg_make_snapshots.php'),
    $client->createRequest('GET', 'ams3.myapp.com:8080/api/ffmpeg_make_snapshots.php')
);

$client->sendAll($requests);

What is happening?

EDIT

My composer.json:

{
    "require": {
        "guzzlehttp/guzzle": "~4"
    }
}

EDIT 2

My composer.lock


{
    "_readme": [
        "This file locks the dependencies of your project to a known state",
        "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file"
    ],
    "hash": "33c003b6e3e2dc0144146f9b652a6719",
    "packages": [
        {
            "name": "guzzlehttp/guzzle",
            "version": "4.0.0",
            "source": {
                "type": "git",
                "url": "https://github.com/guzzle/guzzle.git",
                "reference": "4063f08ca434efac12bf7a3db0d370b1c451345b"
            },
            "dist": {
                "type": "zip",
                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/4063f08ca434efac12bf7a3db0d370b1c451345b",
                "reference": "4063f08ca434efac12bf7a3db0d370b1c451345b",
                "shasum": ""
            },
            "require": {
                "guzzlehttp/streams": "1.*",
                "php": ">=5.4.0"
            },
            "require-dev": {
                "ext-curl": "*",
                "phpunit/phpunit": "4.*",
                "psr/log": "~1"
            },
            "type": "library",
            "extra": {
                "branch-alias": {
                    "dev-master": "4.0.x-dev"
                }
            },
            "autoload": {
                "psr-4": {
                    "GuzzleHttp\\": "src/"
                },
                "files": [
                    "src/functions.php"
                ]
            },
            "notification-url": "https://packagist.org/downloads/",
            "license": [
                "MIT"
            ],
            "authors": [
                {
                    "name": "Michael Dowling",
                    "email": "mtdowling@gmail.com",
                    "homepage": "https://github.com/mtdowling"
                }
            ],
            "description": "Guzzle is a PHP HTTP client library and framework for building RESTful web service clients",
            "homepage": "http://guzzlephp.org/",
            "keywords": [
                "client",
                "curl",
                "framework",
                "http",
                "http client",
                "rest",
                "web service"
            ],
            "time": "2014-03-29 23:11:36"
        },
        {
            "name": "guzzlehttp/streams",
            "version": "1.4.0",
            "source": {
                "type": "git",
                "url": "https://github.com/guzzle/streams.git",
                "reference": "3b761a328e5ed6ed519e960aded95d7acbe77894"
            },
            "dist": {
                "type": "zip",
                "url": "https://api.github.com/repos/guzzle/streams/zipball/3b761a328e5ed6ed519e960aded95d7acbe77894",
                "reference": "3b761a328e5ed6ed519e960aded95d7acbe77894",
                "shasum": ""
            },
            "require": {
                "php": ">=5.4.0"
            },
            "require-dev": {
                "phpunit/phpunit": "~4.0"
            },
            "type": "library",
            "extra": {
                "branch-alias": {
                    "dev-master": "1.4.x-dev"
                }
            },
            "autoload": {
                "psr-4": {
                    "GuzzleHttp\\Stream\\": "src/"
                },
                "files": [
                    "src/functions.php"
                ]
            },
            "notification-url": "https://packagist.org/downloads/",
            "license": [
                "MIT"
            ],
            "authors": [
                {
                    "name": "Michael Dowling",
                    "email": "mtdowling@gmail.com",
                    "homepage": "https://github.com/mtdowling"
                }
            ],
            "description": "Provides a simple abstraction over streams of data (Guzzle 4+)",
            "homepage": "http://guzzlephp.org/",
            "keywords": [
                "Guzzle",
                "stream"
            ],
            "time": "2014-07-19 18:43:42"
        }
    ],
    "packages-dev": [],
    "aliases": [],
    "minimum-stability": "stable",
    "stability-flags": [],
    "platform": [],
    "platform-dev": []
}

EDIT 3

composer config -l output:


[repositories.packagist.type] composer
[repositories.packagist.url] https?://packagist.org
[repositories.packagist.allow_ssl_downgrade] true
[process-timeout] 300
[use-include-path] false
[preferred-install] auto
[notify-on-install] true
[github-protocols] [git, https]
[vendor-dir] vendor
[bin-dir] {$vendor-dir}/bin (vendor/bin)
[cache-dir] C:/Users/User/AppData/Local/Composer
[cache-files-dir] {$cache-dir}/files (C:/Users/User/AppData/Local/Composer/files)
[cache-repo-dir] {$cache-dir}/repo (C:/Users/User/AppData/Local/Composer/repo)
[cache-vcs-dir] {$cache-dir}/vcs (C:/Users/User/AppData/Local/Composer/vcs)
[cache-ttl] 15552000
[cache-files-ttl] 15552000
[cache-files-maxsize] 300MiB (314572800)
[discard-changes] false
[prepend-autoloader] true
[github-domains] [github.com]
[home] C:/Users/User/AppData/Roaming/Compose

The namespaces don't appear to match up. It's trying to load `GuzzleHttp\ClientInterface` and it should be `Guzzle\Http\ClientInterface` — Steve Buzonas, Jul 25 '14 at 20:02
It seems some conflict with functions.php found in the root of Guzzle. — Maykonn, Jul 25 '14 at 20:05
What is the output of `composer config -l` in the working directory of your `composer.json`? filter out the github oauth stuff — Steve Buzonas, Jul 25 '14 at 21:24
Everything appears as if it should work, nearly identical to my test project. What are the contents of `vendor/composer/autoload_psr4.php`? — Steve Buzonas, Jul 25 '14 at 21:36
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/58030/discussion-between-steve-buzonas-and-maykonn). — Steve Buzonas, Jul 25 '14 at 21:37

Steve Buzonas · Accepted Answer · 2014-07-25T21:51:21.353

13

The namespace for guzzle 4 is GuzzleHttp in guzzle 3 the namespace was simply Guzzle.

A composer.json of:

{
    "require": {
        "guzzlehttp/guzzle": "~4"
    }
}

Should allow you to run a php script of:

require 'vendor/autoload.php';

use GuzzleHttp\Client;

$client = new Client();

$requests = Array(
    $client->createRequest('GET', 'ams1.myapp.com:8080/api/ffmpeg_make_snapshots.php'),
    $client->createRequest('GET', 'ams2.myapp.com:8080/api/ffmpeg_make_snapshots.php'),
    $client->createRequest('GET', 'ams3.myapp.com:8080/api/ffmpeg_make_snapshots.php'),
);

$client->sendAll($requests);

If the autoloader still fails after changing the namespace it could be that your version of composer is out of date and does not recognize PSR4 autoloading. If there is no file in vendor/composer/autoload_psr4.php try doing a composer self-update followed by a composer dump-autoload to see if the problem is resolved.

edited Jul 25 '14 at 21:51

answered Jul 25 '14 at 20:33

Steve Buzonas

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I change to `"guzzlehttp/guzzle": "4.0"` and run `composer install`, but now error is: `Fatal error: Class 'GuzzleHttp\Client'` not found. And use stmt to `use GuzzleHttp\Client`; – Maykonn Jul 25 '14 at 21:06
@Maykonn the `~4` would suffice as that installs anything greater than or equal to version 4. Can you provide your `composer.lock`? The versions you should be pulling in with that `composer.json` should be able to find the `GuzzleHttp` namespace. – Steve Buzonas Jul 25 '14 at 21:10
see EDIT 2, is there anything wrong? It was generated automatically by composer install.. – Maykonn Jul 25 '14 at 21:20
1

My composer out of date. Now is all ok! Thanks! – Maykonn Jul 25 '14 at 21:54

Composer autoloader not loading GuzzleHttp\ClientInterface

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