How can I use an if-else statement in PHP? Example code:

Listen

$age = 30;

if ($age >= 18) {
    echo "You are an adult";
} else {
    echo "You are not an adult";
}

How can I use the mkdir function to create a directory in PHP? Example code:

How can I use the array_walk function to apply a function to each element of an array in PHP? Example code:

How can I use the array_reverse function to reverse the order of an array in PHP? Example code:

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

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

How can I convert a string to uppercase in PHP? Example code:

How can I sort an array 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 redirect to another page in PHP? Example code:

How can I connect to a MySQL database using PHP? Example code.

How can I use a conditional statement in PHP? Example code

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

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

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

How can I upload a file using PHP? Example code

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

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

How can I use the filesize function to get the size of a file in PHP? Example code:

How can I get the current date and time 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 use the array_merge function to merge two or more arrays in PHP? Example code:

How can I use a regular expression to replace a pattern in a string 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 use a do-while loop in PHP? Example code:

How can I use the explode function to split a string into an array with a limit 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 sort an associative array by its values in PHP? Example code:

How can I validate a form using PHP? Example code

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

How can I use the rename function to rename a file or directory in PHP? Example code: