PHP学习笔记3-逻辑运算符

逻辑运算符图解:

PHP学习笔记3-逻辑运算符_第1张图片

 

逻辑且&&:

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2015/6/26
 * Time: 18:55
 */
function traceNum(){
    for($i=0;$i<=100;$i++){
        if($i%2==0 && $i%3==0){ //%:求余;输出能同时被2和3整除的数;
            echo $i."<br/>";
        }
    }
}
traceNum();

 

逻辑或||:

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2015/6/26
 * Time: 18:55
 */
function traceNum2(){
    for($j=0;$j<=100;$j++){
        if($j%2==0 || $j%3==0){//输出能被2整除或被3整除的数;
            echo $j."<br/>";
        }
    }
}
traceNum2();


 逻辑非!:

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2015/6/26
 * Time: 18:55
 */
function traceNum3(){
    for($m=0;$m<=100;$m++){
        if($m%2!=0){//输出奇数;
            echo $m."<br/>";
        }
    }
}
traceNum3();

 

你可能感兴趣的:(PHP,自学)