get the content of a url get the content of a link with php and test if the result is empty (2024)

FAQs

How to get PHP file content from URL? ›

PHP file_get_contents() function is the easiest way to parse the content from a web URL. In the following example code, we will fetch the ads. txt file content from URL in PHP. $content = file_get_contents('https://twitter.com/ads.txt');

The parameters from a URL string can be retrieved in PHP using parse_url() and parse_str() functions.

The get() method sends a GET request to the specified URL. The getBody() method retrieves the response body as a stream object, and getContents() reads the contents of the stream and returns it as a string.

PHP empty() Function

The empty() function checks whether a variable is empty or not. This function returns false if the variable exists and is not empty, otherwise it returns true. The following values evaluates to empty: 0.

Definition and Usage

The is_null() function checks whether a variable is NULL or not. This function returns true (1) if the variable is NULL, otherwise it returns false/nothing.

The parse_str() function in PHP is used to parse a query string into variables. It takes a string as an input and sets variables based on this string. This function is often used in conjunction with the parse_url() function to extract the query string from a URL and parse it into an associative array.

The file_get_contents() function returns Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. An E_WARNING level error is generated if filename cannot be found, maxlength is less than zero, or if seeking the specified offset in the stream fails.

To check if a URL parameter exists in PHP, you can use the isset function. This function returns a boolean value indicating whether a variable with the specified name has been set and is not NULL .

In Summary, To check if a URL contains a certain string in PHP, you can use either the strpos() or preg_match() functions.

Getting URL Query Parameters in the Browser

The get() method returns the first value found for the given query parameter. So if there is a duplicate query parameter, only the value of the first one will be returned. You can use the getAll() method to return all values for a given query parameter.

How to get the full path of a URL in PHP? ›

Here is a straightforward way to do it: <? php echo $_SERVER['REQUEST_URI']; The REQUEST_URI key will give you the current URL path along with the query string (if any).

Approach: Using urlencode() Function: The urlencode() function in PHP encodes a string by replacing special characters with their hexadecimal representation preceded by a percent sign (%). This function is typically used to encode query string parameters.

The empty() function in PHP is commonly used to validate form data. It allows developers to check if a variable is considered empty or not. In the context of form validation, empty() can be used to ensure that required fields are not left blank before processing the data.

To check if a query returned an empty result set, you can use the rowCount() method on the PDO statement object. This method returns the number of rows affected by the query, so if the value is 0, it means the query returned an empty result set.