curl Class Reference

RESTful cURL class. More...

Inheritance diagram for curl:

Public Member Functions
	__construct ($settings=array())
	Curl constructor.
	cleanopt ()
	Reset http method.
	delete ($url, $param=array(), $options=array())
	HTTP DELETE method.
	download ($requests, $options=array())
	Download multiple files in parallel.
	download_one ($url, $params, $options=array())
	Downloads one file and writes it to the specified file handler.
	get ($url, $params=array(), $options=array())
	HTTP GET method.
	get_errno ()
	Get curl error code.
	get_info ()
	Get curl information.
	get_raw_response ()
	Get raw HTTP Response Headers.
	get_security ()
	Returns the current curl security helper.
	getResponse ()
	Get HTTP Response Headers.
	head ($url, $options=array())
	HTTP HEAD method.
	options ($url, $options=array())
	HTTP OPTIONS method.
	patch ($url, $params='', $options=array())
	HTTP PATCH method.
	post ($url, $params='', $options=array())
	HTTP POST method.
	put ($url, $params=array(), $options=array())
	HTTP PUT method.
	resetcookie ()
	Reset Cookie.
	resetHeader ()
	Resets the HTTP Request headers (to prepare for the new request)
	resetopt ()
	Resets the CURL options that have already been set.
	set_security ($securityobject)
	Sets the curl security helper.
	setHeader ($header)
	Set HTTP Request Header.
	setopt ($options=array())
	Set curl options.
	trace ($url, $options=array())
	HTTP TRACE method.

Static Public Member Functions
static	get_cacert ()
	Get the location of ca certificates.
static	mock_response ($response)
	For use only in unit tests - we can pre-set the next curl response.
static	strip_double_headers ($input)
	When using a proxy, an additional HTTP response code may appear at the start of the header.

Public Attributes
array	$_tmp_file_post_params = []
	temporary params value if the value is not belongs to class stored_file.
curl_cache false	$cache = false
	Caches http request contents.
bool	$emulateredirects = null
	Perform redirects at PHP level instead of relying on native cURL functionality.
int	$errno
	error code
string	$error
	error
array	$header = array()
	http header
array	$info
	cURL information
bool	$proxy = null
	Uses proxy, null means automatic based on URL.
array	$rawresponse = array()
	Raw response headers, needed for BC in download_file_content().
array	$response = array()
	http's response
string	$version = '0.4 dev'
	library version

Protected Member Functions
	check_securityhelper_blocklist (string $url)
	check_securityhelper_blocklist.
	multi ($requests, $options=array())
	Multi HTTP Requests This function could run multi-requests in parallel.
	request ($url, $options=array())
	Single HTTP Request.
	reset_request_state_vars ()
	Helper function to reset the request state vars.

Detailed Description

RESTful cURL class.

This is a wrapper class for curl, it is quite easy to use: $c = new curl; // enable cache $c = new curl(array('cache'=>true)); // enable cookie $c = new curl(array('cookie'=>true)); // enable proxy $c = new curl(array('proxy'=>true));

// HTTP GET Method $html = $c->get('http://example.com'); // HTTP POST Method $html = $c->post('http://example.com/', array('q'=>'words', 'name'=>'moodle')); // HTTP PUT Method $html = $c->put('http://example.com/', array('file'=>'/var/www/test.txt');

Copyright

Dongsheng Cai dongs.nosp@m.heng.nosp@m.@mood.nosp@m.le.c.nosp@m.om

License

http://www.gnu.org/copyleft/gpl.html GNU Public License

Constructor & Destructor Documentation

__construct()

curl::__construct

(

$settings = array()

)

Curl constructor.

Allowed settings are: proxy: (bool) use proxy server, null means autodetect non-local from url debug: (bool) use debug output cookie: (string) path to cookie file, false if none cache: (bool) use cache module_cache: (string) type of cache securityhelper: (core\files\curl_security_helper_base) helper object providing URL checking for requests. ignoresecurity: (bool) set true to override and ignore the security helper when making requests.

Parameters

array

$settings

Member Function Documentation

check_securityhelper_blocklist()

curl::check_securityhelper_blocklist ( string $url )

protected

check_securityhelper_blocklist.

Checks whether the given URL is blocked by checking both plugin's security helpers and core curl security helper or any curl security helper that passed to curl class constructor. If ignoresecurity is set to true, skip checking and consider the url is not blocked. This augments all installed plugin's security helpers if there is any.

Parameters

string

$url

the url to check.

Return values

string

- an error message if URL is blocked or null if URL is not blocked.

delete()

curl::delete	(		$url,
			$param = array(),
			$options = array() )

HTTP DELETE method.

Parameters

string	$url
array	$param
array	$options

Return values

bool

download()

curl::download	(		$requests,
			$options = array() )

Download multiple files in parallel.

Calls multi() with specific download headers

$c = new curl(); $file1 = fopen('a', 'wb'); $file2 = fopen('b', 'wb'); $c->download(array( array('url'=>'http://localhost/', 'file'=>$file1), array('url'=>'http://localhost/20/', 'file'=>$file2) )); fclose($file1); fclose($file2);

or

$c = new curl(); $c->download(array( array('url'=>'http://localhost/', 'filepath'=>'/tmp/file1.tmp'), array('url'=>'http://localhost/20/', 'filepath'=>'/tmp/file2.tmp') ));

Parameters

array	$requests	An array of files to request { url => url to download the file [required] file => file handler, or filepath => file path } If 'file' and 'filepath' parameters are both specified in one request, the open file handle in the 'file' parameter will take precedence and 'filepath' will be ignored.
array	$options	An array of options to set

Return values

array

An array of results

download_one()

curl::download_one	(		$url,
			$params,
			$options = array() )

Downloads one file and writes it to the specified file handler.

$c = new curl(); $file = fopen('savepath', 'w'); $result = $c->download_one('http://localhost/', null, array('file' => $file, 'timeout' => 5, 'followlocation' => true, 'maxredirs' => 3)); fclose($file); $download_info = $c->get_info(); if ($result === true) { // file downloaded successfully } else { $error_text = $result; $error_code = $c->get_errno(); }

$c = new curl(); $result = $c->download_one('http://localhost/', null, array('filepath' => 'savepath', 'timeout' => 5, 'followlocation' => true, 'maxredirs' => 3)); // ... see above, no need to close handle and remove file if unsuccessful

Parameters

string	$url
array | null	$params	key-value pairs to be added to $url as query string
array	$options	request options. Must include either 'file' or 'filepath'

Return values

bool|string

true on success or error string on failure

get()

curl::get	(		$url,
			$params = array(),
			$options = array() )

HTTP GET method.

Parameters

string	$url
array	$params
array	$options

Return values

bool

get_cacert()

static curl::get_cacert ( )

static

Get the location of ca certificates.

Return values

string

absolute file path or empty if default used

get_errno()

curl::get_errno

(

)

Get curl error code.

Return values

int

get_info()

curl::get_info

(

)

Get curl information.

Return values

array

get_raw_response()

curl::get_raw_response

(

)

Get raw HTTP Response Headers.

Return values

array

of strings

get_security()

curl::get_security

(

)

Returns the current curl security helper.

Return values

core\files\curl_security_helper

instance.

getResponse()

curl::getResponse

(

)

Get HTTP Response Headers.

Return values

array

of arrays

head()

curl::head	(		$url,
			$options = array() )

HTTP HEAD method.

See also

request()

Parameters

string	$url
array	$options

Return values

bool

mock_response()

static curl::mock_response ( $response )

static

For use only in unit tests - we can pre-set the next curl response.

This is useful for unit testing APIs that call external systems.

Parameters

string

$response

multi()

curl::multi ( $requests, $options = array() )

protected

Multi HTTP Requests This function could run multi-requests in parallel.

Parameters

array	$requests	An array of files to request
array	$options	An array of options to set

Return values

array

An array of results

Reimplemented in oauth2_client.

options()

curl::options	(		$url,
			$options = array() )

HTTP OPTIONS method.

Parameters

string	$url
array	$options

Return values

bool

patch()

curl::patch	(		$url,
			$params = '',
			$options = array() )

HTTP PATCH method.

Parameters

string	$url
array | string	$params
array	$options

Return values

bool

post()

curl::post	(		$url,
			$params = '',
			$options = array() )

HTTP POST method.

Parameters

string	$url
array | string	$params
array	$options

Return values

bool

put()

curl::put	(		$url,
			$params = array(),
			$options = array() )

HTTP PUT method.

Parameters

string	$url
array	$params
array	$options

Return values

bool

request()

curl::request ( $url, $options = array() )

protected

Single HTTP Request.

Parameters

string	$url	The URL to request
array	$options

Return values

bool

reset_request_state_vars()

curl::reset_request_state_vars ( )

protected

Helper function to reset the request state vars.

Return values

void.

set_security()

curl::set_security

(

$securityobject

)

Sets the curl security helper.

Parameters

core\files\curl_security_helper

$securityobject

instance/subclass of the base curl_security_helper class.

Return values

bool	true if the security helper could be set, false otherwise.

setHeader()

curl::setHeader

(

$header

)

Set HTTP Request Header.

Parameters

array

$header

setopt()

curl::setopt

(

$options = array()

)

Set curl options.

Do not use the curl constants to define the options, pass a string corresponding to that constant. Ie. to set CURLOPT_MAXREDIRS, pass array('CURLOPT_MAXREDIRS' => 10) or array('maxredirs' => 10) to this method.

Parameters

array

$options

If array is null, this function will reset the options to default value.

Return values

void

Exceptions

coding_exception

If an option uses constant value instead of option name.

strip_double_headers()

static curl::strip_double_headers ( $input )

static

When using a proxy, an additional HTTP response code may appear at the start of the header.

For example, when using https over a proxy there may be 'HTTP/1.0 200 Connection Established'. Other codes are also possible and some may come with their own headers.

If using the return value containing all headers, this function can be called to remove unwanted doubles.

Note that it is not possible to distinguish this situation from valid data unless you know the actual response part (below the headers) will not be included in this string, or else will not 'look like' HTTP headers. As a result it is not safe to call this function for general data.

Parameters

string

$input

Input HTTP response

Return values

string

HTTP response with additional headers stripped if any

trace()

curl::trace	(		$url,
			$options = array() )

HTTP TRACE method.

Parameters

string	$url
array	$options

Return values

bool

Member Data Documentation

$emulateredirects

bool curl::$emulateredirects = null

Perform redirects at PHP level instead of relying on native cURL functionality.

Always true now.

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The documentation for this class was generated from the following file:

• lib/filelib.php