PHP Switch SELECT statement Detail instance

A switch statement is like a series of if statements to the same expression. In many times, you want to compare the same variable (or expression) with many different values, and perform different pieces of the program based on different comparison results. This is the use of the switch statement.

The following two examples do the same thing in different ways, one with a set of if statements and the other with a SWITCH statement:

code is as follows	copy code
/* Example 1　　*/ if ($i = = 0) { print "I equals 0"; 　　　　 } if ($i = = 1) { print "I equals 1"; 　　　 if ($i = = 2) { print "I equals 2"; 　　　　 /* Example 2 */ Switch ($i) { Case 0: print "I equals 0"; Break 　　　　 Case 1: print "I equals 1"; Break 　　　　 Case 2: print "I equals 2"; Break }