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

Listen

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

$json_string = json_encode($data);

echo $json_string;

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

How can I use the fopen and fwrite functions to write a string to a file in PHP? Example code:

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

How can I add days to a date in PHP? Example code:

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:

How can I use the filemtime function to get the last modified time of a file in PHP? Example code:

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

How can I use the curl_setopt_array function to set multiple options for a cURL session in PHP? Example code:

How can I use the file_put_contents function to write a string to a file in PHP? Example code:

How can I use the str_replace function to replace multiple substrings in a string in PHP? Example code:

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

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

How can I use the array_chunk function to split an array into chunks in PHP? Example code:

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

How can I use a try-catch block in PHP? Example code:

How can I write to a CSV file in PHP? Example code:

How can I use the array_map function to apply a function to each element of an array 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 array_filter function to filter an array based on a condition in PHP? Example code:

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

How can I use the strrev function to reverse a string in PHP? Example code:

How can I send an email using PHP? Example code

How can I use a switch statement in PHP? Example code:

How can I use the array_unique function to remove duplicate elements from an array in PHP? Example code:

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

How can I use a ternary operator in PHP? Example code:

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

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

How can I use the array_shift function to remove the first element from an array in PHP? Example code:

How can I use the copy function to copy a file in PHP? Example code: