A detailed description of the curl correlation function in PHP

A detailed description of the curl correlation function in PHP

A detailed description of the curl correlation function in PHP


In PHP, you can use the power provided by curl by calling the following function.

curl_init-Initializes a curl dialog and returns a link resource handle

curl_exec-runs a Curl dialog that returns true successfully, otherwise false. If Curlopt_returntransfer is set, the response content is returned successfully, otherwise false

Curl_close-closes a conversation while freeing up resources

Curl_getinfo-gets the message of a Curl connection resource handle

curl_copy_handle-Copy all the contents and parameters of a Curl connection resource
curl_errno-returns a numeric number that contains the current dialog error message
curl_error-returns a char string that contains the current dialog error message

curl_multi_add_handle-Adding a separate curl handle resource to the Curl Batch dialog

curl_multi_init-Initializes a curl batch handle resource

curl_multi_exec-parsing a Curl batch handle

Curl_multi_close-closes a batch handle resource while freeing the resource
curl_multi_getcontent-returns the document flow of the obtained output
Curl_multi_info_read-gets the current resolved curl for the transfer message
curl_multi_rearouse_handle-removing a handle resource from the Curl batch handle resource
Curl_multi_select-get all the sockets associated with the CURL extension, which can and be "selected"
curl_setopt_array-sets the dialog parameter as an array of curl for one
curl_setopt-set the dialog parameters for a curl
curl_version-getting Curl-related version messages



Examples of related functions:

The function of Curl_init () Initializes a curl dialog, the Curl_init () parameter of one of the parameters is optional, indicating a URL address.
The function of the curl_exec () parameter is to run one of the curl dialogs, and one parameter is the handle returned by the Curl_init () parameter.
The function of the curl_close () parameter is to close one of the curl dialogs, and one parameter is the handle returned by the Curl_init () parameter.

$ch = Curl_init ("http://www.php.cn/");
Curl_exec ($ch);
Curl_close ($ch);
?>



The function of the curl_version () parameter is to get curl about the version message, the curl_version () parameter has a parameter that is not clear what to do
------------------------------


Print_r (Curl_version ())
?>

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The function of the Curl_getinfo () parameter is to get a message for the Curl Connection resource handle, the Curl_getinfo () parameter has two parameters, the first parameter is the resource handle of curl, and the second parameter is the following constants:

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$ch = Curl_init ("http://www.php.cn/");
Print_r (Curl_getinfo ($ch));
?&

Gt

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The optional constants are:
*curlinfo_effective_url: The last valid URL address
*curlinfo_http_code: The last HTTP source code received
*curlinfo_filetime: The time to obtain a document remotely, if not available, return value "1"
*curlinfo_total_time: Time spent on the last transmission
*curlinfo_namelookup_time: Name resolution is consumed by

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