Educator

For & Foreach Loops

• A for loop is a type of conditional loop that requires three expressions in its definition:
  • the 1st expression is evaluated once and only once before the loop begins iteration
  • the 2nd expression is the test condition for the loop, whose value is compared to TRUE before each iteration
  • the 3rd expression gets evaluated after each iteration of the loop
• A foreach loop is a special type of conditional loop used specifically for iterating over arrays. When using a foreach loop to iterate over an array, the array’s internal cursor is automatically reset by PHP before entering the loop and automatically advanced by one on each loop iteration.
• foreach loops have two syntaxes. One is typically used for iterating over indexed arrays and the other for iterating over associative arrays.
• Both continue and break statements work within for and foreach loops just as they do in while and do-while loops.
• Additional Resources:
  • PHP Manual - for Loop
  • PHP Manual - foreach Loop