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

$number = 1234567.89;

echo number_format($number);

How can I use the array_unique function to remove duplicate elements from an array in PHP? Example code:

How can I validate a form using PHP? Example code

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

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

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

How to create drop down menu in PHP with example

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 a do-while loop in PHP? Example code:

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

How can I trim whitespace from the beginning and end of a string in PHP? Example code:

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

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

PHP Use Cases with Example Source Code

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

How can I read a file 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 a regular expression to match a pattern in a string in PHP? Example code:

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

How can I send an email using PHP? Example code

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

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

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

How can I calculate the difference between two dates 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 use an if-else statement in PHP? Example code:

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

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

How can I prevent SQL injection in PHP?