Specific parsing of switch statements in PHP

We all know that the switch statement is a looping statement that performs different actions based on different conditions, and the switch statement is also the longest common logical control statement in an object-oriented programming statement. The Switch statement is used to perform different actions based on multiple different conditions-that is, when the conditions are different, perform different logical operations.

This article describes the use of the switch statement in PHP, which is similar to the switch usage in other statements, but note that there is a break statement.

Standard syntax for switch statements in PHP:

switch (expression) {case Label1:code to being executed if expression = Label1; break; case Label2:code to be executed if ex pression = Label2; Break;default:code to being executed if expression is different from both Label1 and Label2;}

Example:

Switch ($i) {case  1:    echo 1;    break;  Case 2:    Echo 2;    break;  Default:    echo ' others ';}

You can also use switch to determine a range of values, or to customize conditions in a case.

<?phpheader ("Content-type:text/html;charset=utf8"); $score =50;switch ($score) {case $score >=90 && $ SCORE<=100:  echo "excellent <br>";  Break Case $score >=80 && $score <90:  echo "Liang <br>";  Break Case $score >=70 && $score <80:  echo "in <br>";  Break Case $score >=60 && $score <70:  echo "pass <br>";  Break Case $score >=0 && $score <60:  echo "inferior lattice <br>";  Break Default:  echo "score input error <br>";}? >

Simple example

<?php//switch Details//Case one: When the numeric match is automatically converted into a string $a = 1;     Switch ($a) {case "1": Echo ' hello1 ';   Break     Default:echo ' Sorry none is the same! ';  Break } Echo ' <br/> '.  Successful exit ";   Echo ' 
Run results

Hello1 Successful exit Hello2 Successful exit Hello3 Successful exit Hello4 Successful exit Hello5 Successful exit Hello6 Successful exit Hello7 Successful exit Hello81 Successful exit I'm exit 5th, Hello61 successfully quit. Hello6, I'm exit 2nd.
Summarize:

This article used an example of PHP in the switch statement, for everyone more intuitive understanding, I believe you have a preliminary understanding of the switch statement!

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