How can I use the array_rand function to get a random key from an array in PHP? Example code:

$fruits = array("apple", "banana", "orange");

$random_key = array_rand($fruits);

echo $fruits[$random_key];

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

How can I use the array_intersect function to get the common elements between two or more arrays in PHP? Example code:

How can I format a date in PHP? Example code:

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

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

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

How can I use a regular expression to match a pattern in 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 use the copy function to copy a file 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 use the curl_setopt function to set options for a cURL session in PHP? Example code:

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

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

How can I check if a variable is set in PHP? Example code:

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

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

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

How can I use the fopen and fgets functions to read a file line by line in PHP? Example code:

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

How can I generate a random number in PHP? Example code

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

How can I create a multidimensional array in PHP? Example code:

How can I use the curl_exec function to execute a cURL session and get the response in PHP? Example code:

How to send SMS using PHP program (full code sample included)

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

How can I use the is_readable function to check if a file is readable in PHP? Example code:

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

How can I validate a form using PHP? Example code

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

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