How-to articles, tricks, and solutions about CURL
The error message "Call to undefined function curl_init()" typically indicates that the cURL extension for PHP is not installed or is not enabled.
There are several possible reasons why cURL is returning a 0 length response when trying to connect to an HTTPS site.
The location of the curl installation depends on the operating system and the method used to install it.
It sounds like you are trying to use curl to make a request to an HTTPS url and are encountering an error that says "Cannot resolve host." This error can occur for a few reasons:
To pass a JSON object through cURL using the PUT method, you can use the following command:
Error 18 means that the transfer was closed with outstanding read data remaining.
This error message appears when curl is unable to verify the SSL/TLS certificate presented by the server.
This error is usually caused by a network issue, such as a lost connection or a network timeout.
To make a POST request with PHP's cURL functions, you can use the CURLOPT_POST option to send POST data.
To make a POST request using curl and include a header of Content-Type: application/x-www-form-urlencoded, you can use the following command:
To download a large file using curl, use the following command:
In PHP, you can use the file_get_contents() function to retrieve the HTML code of a website, and then use regular expressions or a DOM parsing library to extract the title and meta tags.
To get a thumbnail image for a YouTube video in PHP, you can use the file_get_contentsfunction to make a GET request to the videos.list method of the YouTube Data API.
To enable cURL in PHP, you need to make sure that the cURL extension is enabled in your PHP configuration.
To get file_get_contents() to work with HTTPS, you may need to make sure that PHP has been compiled with the OpenSSL extension.
To get information about a cURL request that you have sent using PHP, you can use the curl_getinfo() function.
To get the content of a webpage using cURL, you can use the following command:
To include the Authorization header in a cURL POST request in PHP, you can use the CURLOPT_HTTPHEADER option and pass it an array of headers like this:
In this snippet, we will share with you the most flexible and powerful ways of sending post requests with the help of PHP. Just check out the examples.
To upload a file using cURL in PHP, you can use the curl_setopt function to specify the CURLOPT_POSTFIELDS option with the file data.
The error message "JSONDecodeError: Expecting value: line 1 column 1 (char 0)" typically occurs when you are trying to parse a string as JSON, but the string is not in a valid JSON format.
To send a DELETE request with PHP using cURL, you can use the following code:
You can add a custom User Agent value to a cURL request in PHP using the CURLOPT_USERAGENT option.
If cURL is returning a HTTP code of 0, it usually indicates that cURL was unable to communicate with the server.