ACID (Atomicity Consistency Isolation Durability) Model of database
ACID(Atomicity Consistency Isolation Durability) is a set of properties that guarantee that database transactions are processed reliably. In the context of databases, a single logical operation on the data is called a transaction.   Atomicity Atomicity is an all-or-none proposition. Modifications on the data in the database either fail or succeed. Each transaction is said… (10 comments)

String Validation Validate name, surname by the below function to restrict only letters and spaces. Validate numeric value by the below function to restrict only numbers,you can uncomment any line according to your need. Alphanumeric Characters Validation Below function validates alphanumeric characters.ctype is complete function library in PHP. Validation for URL Exist or not This…