Simple example of PHP Process Control switch _php instance

switch allows you to select multiple possible results for a scalar (expression).

Grammar:

Switch (expr) {case 
  result1: 
  statement1 break 
  ; 
  Case RESULT2: 
  statement2 break 
  ; 
  ..... Default: 
  statement 

The system calculates the value of expr, according to the results (RESULT1, RESULT2, etc.) to select the following corresponding execution statement, if all the case results are inconsistent, then execute the statement in default.

Example:

<?php 
Switch ($x) {case 
  0: 
  echo "x equals 0"; 
  break; 
  Case 1: 
  echo "x equals 1"; 
  break; 
  Case 2: 
  echo "x equals 2"; 
  break; 
  Default: 
  echo "x is neither equal to 1 and 2 nor equal to 0"; 
} 

Tips

• Can have multiple case conditions to judge

case later results are not limited to numbers, but can also be characters or other types of PHP supported

default is not necessary.

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