PHP process control switch instance, PHP process switch instance_PHP tutorial

php process control switch instance, php process switch instance

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:

<?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";
}
?>

Run

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

Original address: http://www.manongjc.com/php/php_if_switch.html

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http://www.bkjia.com/PHPjc/1131875.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1131875.htmlTechArticlephp process control switch instance, php process switch instance switch allows multiple possible results for a scalar (expression) Make a choice. Syntax: switch (expr) { case result1: statement1...