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

Listen

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

$key = array_search("banana", $fruits);

echo $key;

How can I calculate the difference between two dates in PHP? Example code:

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

How can I validate a form using PHP? Example code

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

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

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

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

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

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

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

How can I replace a substring in a string in PHP? Example code:

How can I use the implode function to join an array into a string with a separator in PHP? Example code:

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

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

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

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

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

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

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

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

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

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

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

How can I use the explode function to split a string into an array in PHP? Example code:

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

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