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

Listen

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

$file_size = filesize($file);

echo $file_size;

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

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

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

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

How can I use the array_reduce function to apply a function to each element of an array and reduce it to a single value 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 array_merge function to merge two or more arrays in PHP? Example code:

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

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

How can I check if a string ends with a certain substring 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 htmlspecialchars function to convert special characters to HTML entities 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_slice function to get a portion of an array in PHP? Example code:

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

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

PHP Use Cases with Example Source Code

How can I subtract days from a date in PHP? Example code:

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

How can I use the json_decode function to convert a JSON string to an array or object 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 fopen and fgets functions to read a file line by line 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 a switch statement in PHP? Example code:

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