PHP converts url parameters to array

When developing web applications, processing some url parameters is an essential step, and PHP, as a highly flexible language, provides many methods to easily handle url parameters. One of the methods is to convert the url parameters into The parameters are converted into arrays, so that url parameters can be easily processed and modified.

The following will introduce how to convert url parameters into arrays.

1. Get url parameters

In PHP, we can use the $_GET function to get the parameters in the url, which returns an associative array where the key is in the url The parameter name, the value is the parameter value in the url.

For example, if we have a link: http://example.com/?name=John&age=30, we can use the $_GET function to get these parameters:

$name = $_GET['name'];
$age = $_GET['age'];

2. Convert url parameters into an array

After obtaining the url parameters, we can use a simple method to convert them into an array. The method is to use each parameter name as a key and each parameter value as the value of the key. As shown below:

$params = array();
foreach($_GET as $key => $value) {
  $params[$key] = $value;
}

The above code first creates an empty array named $params, and then uses a foreach loop to iterate through each element in the $_GET array. In each loop, the key of the array (that is, the parameter name) is used as the key of the new array, and the value of the array (that is, the parameter value) is used as the value of the new array.

In this way, we can convert the url parameters into an array and use them in the application at any time. For example, if we want to display the user's name and age on the page, we can do this:

echo "Name: " . $params['name'] . "<br>";
echo "Age: " . $params['age'] . "<br>";

3. Full code

The following is a complete url parameter Example code converted to an array:

$params = array();
foreach($_GET as $key => $value) {
  $params[$key] = $value;
}

// Display the name and age parameters
echo "Name: " . $params['name'] . "<br>";
echo "Age: " . $params['age'] . "<br>";

Run the above code, if we use a link like http://example.com/?name=John&age=30, we will see the following output:

Name: John
Age: 30

Summary:

In PHP, converting url parameters into arrays is a very simple and flexible method. By using the $_GET function to get the url parameters, you can easily convert them into an array that is easy to handle and modify. Whether you are developing a simple website or a complex web application, converting url parameters into an array is an essential step.

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