How can I use the array_keys function to get an array of keys from an associative array in PHP? Example code:

Listen

$person = array(
    "name" => "John Doe",
    "age" => 30,
    "email" => "johndoe@example.com"
);

$keys = array_keys($person);

print_r($keys);

How can I read data from a JSON file using PHP? Example code:

How can I generate a random string in PHP? Example code:

How can I use the array_slice function to get a portion of an array in PHP? Example code:

How can I sort an array in PHP? Example code:

How can I use the array_search function to search for a value in an array and return its key in PHP? Example code:

How can I use a for loop in PHP? Example code:

How can I prevent SQL injection in PHP?

How can I use the htmlspecialchars function to convert special characters to HTML entities in PHP? Example code:

How can I calculate the sum of an array in PHP? Example code:

How can I use an elseif statement in PHP? Example code:

How can I read a file in PHP? Example code:

How can I create a session variable in PHP? Example code

How can I use the array_push function to add an element to an array in PHP? Example code:

How can I format a number with commas in PHP? Example code:

How can I check if a string starts with a certain substring in PHP? Example code:

How can I use the glob function to get a list of files that match a pattern in PHP? Example code:

How can I use the json_decode function to convert a JSON string to an array or object in PHP? Example code:

PHP Use Cases with Example Source Code

How can I get the current date and time in PHP? Example code:

How can I sort an array in PHP? Example code:

How can I sort an associative array by its values in PHP? Example code:

How can I validate a form using PHP? Example code

How can I sort an associative array by its keys in PHP? Example code:

How can I use a do-while loop in PHP? Example code:

How can I create a file in PHP? Example code:

How can I sort an array in descending order in PHP? Example code:

How can I use the scandir function to get a list of files and directories in a directory in PHP? Example code:

How can I trim whitespace from the beginning and end of a string in PHP? Example code:

Get User IP Address using PHP – Source Code + Demo

How can I use the array_diff function to get the elements in one array that are not in another array in PHP? Example code: