PHP Loops

Often when you write code, you want the same block of code to run over and over again in a row. Instead of adding several almost equal lines in a script we can use loops to perform a task like this.
In PHP, we have the following looping statements:

• while - loops through a block of code while a specified condition is true
• do...while - loops through a block of code once, and then repeats the loop as long as a specified condition is true
• for - loops through a block of code a specified number of times
• foreach - loops through a block of code for each element in an array 

  The while Loop

  The while loop executes a block of code while a condition is true.
  

  Syntax

  while (condition)   {   code to be executed;   }

  The do...while Statement

  The do...while statement will always execute the block of code once, it will then check the condition, and repeat the loop while the condition is true.
  

  Syntax

  do   {   code to be executed;   } while (condition);