PHP Control Structures

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Control Structures in PHP

In programming, a problem specific to decision making and the flow of execution can be broken down into three specific types of control structures. These are:

• Sequential Execution
• Loops (while, do/while, for, etc.)
• Two-Way Decisions (if, if/else, switch, etc.)

Examples

The if/else Statement

The most commonly used conditional statement is the if/else statement.

if ($expression)
{
  // statement
}
else 
{
  // statement 
}

It is important to remember a few things about this statement:

• The else clause is optional
• Best use is to make the expression boolean logic, evaluating to either True or False