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

Listen

$file = "/path/to/file.txt";
$new_file = "/path/to/new_file.txt";

copy($file, $new_file);

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

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

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

How can I use the file_get_contents function to read the contents of a file into a string 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 a regular expression to replace a pattern 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 use the in_array function to check if an element exists in an array 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 array in descending order 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_values function to get an array of values from an associative array in PHP? Example code:

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

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

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

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

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

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

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

How can I shuffle an array 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 the array_search function to search for a value in an array and return its key 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 do-while loop in PHP? Example code:

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

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