PHP code example of klein / klein

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

klein / klein example snippets

in = new \Klein\Klein();

$klein->respond('GET', '/hello-world', function () {
    return 'Hello World!';
});

$klein->dispatch();

$klein->respond(function () {
    return 'All the things';
});

$klein->respond('/[:name]', function ($request) {
    return 'Hello ' . $request->name;
});

$klein->respond('GET', '/posts', $callback);
$klein->respond('POST', '/posts', $callback);
$klein->respond('PUT', '/posts/[i:id]', $callback);
$klein->respond('DELETE', '/posts/[i:id]', $callback);
$klein->respond('OPTIONS', null, $callback);

// To match multiple request methods:
$klein->respond(array('POST','GET'), $route, $callback);

// Or you might want to handle the requests in the same place
$klein->respond('/posts/[create|edit:action]?/[i:id]?', function ($request, $response) {
    switch ($request->action) {
        //
    }
});

$klein->respond(function ($request, $response, $service) {
    $service->xml = function ($object) {
        // Custom xml output function
    }
    $service->csv = function ($object) {
        // Custom csv output function
    }
});

$klein->respond('/report.[xml|csv|json:format]?', function ($request, $response, $service) {
    // Get the format or fallback to JSON as the default
    $send = $request->param('format', 'json');
    $response->$send($report);
});

$klein->respond('/report/latest', function ($request, $response, $service) {
    $response->file('/tmp/cached_report.zip');
});

$klein->respond(function ($request, $response, $service, $app) use ($klein) {
    // Handle exceptions => flash the message and redirect to the referrer
    $klein->onError(function ($klein, $err_msg) {
        $klein->service()->flash($err_msg);
        $klein->service()->back();
    });

    // The fourth parameter can be used to share scope and global objects
    $app->db = new PDO(...);

    // $app also can store lazy services, e.g. if you don't want to
    // instantiate a database connection on every response
    $app->register('db', function() {
        return new PDO(...);
    });
});

$klein->respond('POST', '/users/[i:id]/edit', function ($request, $response, $service, $app) {
    // Quickly validate input parameters
    $service->validateParam('username', 'Please enter a valid username')->isLen(5, 64)->isChars('a-zA-Z0-9-');
    $service->validateParam('password')->notNull();

    $app->db->query(...); // etc.

    // Add view properties and helper methods
    $service->title = 'foo';
    $service->escape = function ($str) {
        return htmlentities($str); // Assign view helpers
    };

    $service->render('myview.phtml');
});

// myview.phtml:
<title> echo $this->escape($this->title) 

$klein->with('/users', function () use ($klein) {

    $klein->respond('GET', '/?', function ($request, $response) {
        // Show all users
    });

    $klein->respond('GET', '/[:id]', function ($request, $response) {
        // Show a single user
    });

});

foreach(array('projects', 'posts') as $controller) {
    // Include all routes defined in a file under a given namespace
    $klein->with("/$controller", "controllers/$controller.php");
}

// Routes to "/projects/?"
$this->respond('GET', '/?', function ($request, $response) {
    // Show all projects
});

$service->addValidator('hex', function ($str) {
    return preg_match('/^[0-9a-f]++$/i', $str);
});

$service->validateParam('key')->isHex();

$service->validate($username)->isLen(4,16);

$service->validateParam('key', 'The key was invalid')->isHex()->isLen(32);

$klein->respond('*', function ($request, $response, $service) { $service->render('header.phtml'); });
//other routes
$klein->respond('*', function ($request, $response, $service) { $service->render('footer.phtml'); });

// Match all requests that end with '.json' or '.csv'
$klein->respond('@\.(json|csv)$', ...

// Match all requests that _don't_ start with /admin
$klein->respond('!@^/admin/', ...

$service->escape = function ($str) {
    return htmlentities($str);
};

$service->render('myview.phtml', array('title' => 'My View'));

// Or just: $service->title = 'My View';

$this->render('partial.html')           // Render partials
$this->sharedData()->get('myvar')       // Access stored service variables
echo $this->query(array('page' => 2))   // Modify the current query string

$request->
    id($hash = true)                    // Get a unique ID for the request
    paramsGet()                         // Return the GET parameter collection
    paramsPost()                        // Return the POST parameter collection
    paramsNamed()                       // Return the named parameter collection
    cookies()                           // Return the cookies collection
    server()                            // Return the server collection
    headers()                           // Return the headers collection
    files()                             // Return the files collection
    body()                              // Get the request body
    params()                            // Return all parameters
    params($mask = null)                // Return all parameters that match the mask array - extract() friendly
    param($key, $default = null)        // Get a request parameter (get, post, named)
    isSecure()                          // Was the request sent via HTTPS?
    ip()                                // Get the request IP
    userAgent()                         // Get the request user agent
    uri()                               // Get the request URI
    pathname()                          // Get the request pathname
    method()                            // Get the request method
    method($method)                     // Check if the request method is $method, i.e. method('post') => true
    query($key, $value = null)          // Get, add to, or modify the current query string
    <param>                             // Get / Set (if assigned a value) a request parameter

$response->
    protocolVersion($protocol_version = null)       // Get the protocol version, or set it to the passed value
    body($body = null)                              // Get the response body's content, or set it to the passed value
    status()                                        // Get the response's status object
    headers()                                       // Return the headers collection
    cookies()                                       // Return the cookies collection
    code($code = null)                              // Return the HTTP response code, or set it to the passed value
    prepend($content)                               // Prepend a string to the response body
    append($content)                                // Append a string to the response body
    isLocked()                                      // Check if the response is locked
    cope of $response)
    addValidator($method, $callback)                // Add a custom validator method
    validate($string, $err = null)                  // Validate a string (with a custom error message)
    validateParam($param, $err = null)                  // Validate a param
    <callback>($arg1, ...)                          // Call a user-defined helper
    <property>                                      // Get a user-defined property

$app->
    <callback>($arg1, ...)                          //Call a user-defined helper

$validator->
    notNull()                           // The string must not be null
    isLen($length)                      // The string must be the exact length
    isLen($min, $max)                   // The string must be between $min and $max length (inclusive)
    isInt()                             // Check for a valid integer
    isFloat()                           // Check for a valid float/decimal
    isEmail()                           // Check for a valid email
    isUrl()                             // Check for a valid URL
    isIp()                              // Check for a valid IP
    isAlpha()                           // Check for a-z (case insensitive)
    isAlnum()                           // Check for alphanumeric characters
    contains($needle)                   // Check if the string contains $needle
    isChars($chars)                     // Validate against a character list
    isRegex($pattern, $modifiers = '')  // Validate against a regular expression
    notRegex($pattern, $modifiers ='')
    is<Validator>()                     // Validate against a custom validator
    not<Validator>()                    // The validator can't match
    <Validator>()                       // Alias for is<Validator>()

 php

$klein->respond(function ($request, $response, $service, $app) {
    $app->register('lazyDb', function() {
        $db = new stdClass();
        $db->name = 'foo';
        return $db;
    });
});

//Later

$klein->respond('GET', '/posts', function ($request, $response, $service, $app) {
    // $db is initialised on first request
    // all subsequent calls will use the same instance
    return $app->lazyDb->name;
});

html
<title> echo $this->escape($this->title)