A simple example of php process control switch, phpswitch_PHP tutorial

A simple example of php flow control switch, phpswitch

switch allows selection of multiple possible results of a scalar (expression).

Syntax:

switch (expr) { 
  case result1: 
  statement1 
  break; 
  case result2: 
  statement2 
  break; 
  …… 
  default: 
  statement 
} 

The system calculates the value of expr and selects the corresponding execution statement below based on the calculation results (result1, result2, etc.). If all case results do not match, the statement in default will be executed.

Example:

<&#63;php 
switch ($x) { 
  case 0: 
  echo "x 等于 0"; 
  break; 
  case 1: 
  echo "x 等于 1"; 
  break; 
  case 2: 
  echo "x 等于 2"; 
  break; 
  default: 
  echo "x 既不等于1和2，也不等于0"; 
} 
&#63;> 

Tips

•There can be multiple case conditional judgments

•The result after the case is not limited to numbers, but can also be characters or other types supported by PHP

•default is not required

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