$arr[0]和$arr['0']有什么区别？

如题 我以前学JS的 数组 下标 不需要加''  而是PHP数组下标 必须加引号么   我试了 没加'' 也能输出苹果...

From [PHPdiscussion group] 2016-12-19 17:57:27 0  2  1765

define()要大写吗？记着以前看过其他的PHP教程中，define()是大写的，好像大写跟小写是不一样的是吗，求哪位大神解释下

From [PHPdiscussion group] 2016-12-19 11:52:09 0  2  1765

Please God, the pop-up window code cannot be deleted

I found a code on the Internet for WeChat to automatically jump to the browser, but after jumping, a download ...

From [PHPdiscussion group] 2018-04-09 13:23:03 0  2  1764

php - workerman 和 swoole哪个稳定，不谈性能...

到底用workerman还是swoole，哪个稳定性好，不谈性能

From [PHPdiscussion group] 2017-04-10 17:34:52 0  10  1764

What is the latest QQ group number?

What is the latest QQ group number? What is the latest QQ group number? What is the latest QQ group number?

From [PHPdiscussion group] 2019-05-06 15:26:54 0  1  1763

这个验证码怎么没有呢？

没有验证码

From [PHPdiscussion group] 2017-04-15 11:58:14 0  1  1763

Which framework is better, TP5 or Laraver???

I found that the Laraver framework is used by the most people online, and some companies require that most peo...

From [PHPdiscussion group] 2017-12-01 10:04:51 0  6  1762

PhpStudy 8.0 How to create multiple websites on one server, what should you pay attention to

How to configure multiple websites on one server? What should I pay attention to? I created it. Both domain na...

From [PHPdiscussion group] 2019-08-29 10:22:52 0  2  1761

分享网站到微信朋友圈

用户用手机扫一扫网页二维码,就可以把网页分享到微信朋友圈,php代码怎么写

From [PHPdiscussion group] 2016-12-27 15:59:45 0  4  1761

An error is reported when testing the database. What is the problem? ? ?

SQLSTATE[HY000] [2054] Connecting to 3.22, 3.23 & 4.0 servers is not supported. I installed mysql 5.5, whi...

From [PHPdiscussion group] 2018-07-10 09:37:03 0  6  1760

Questions about legality

I am a newbie, and a security issue suddenly occurred to me when I was writing code today. For various ajax re...

From [PHPdiscussion group] 2017-09-01 14:07:24 0  3  1760

Can line breaks be achieved?

<?php$greet = function($name){ echo $name.', hello';};$greet('tomorrow');$greet('PHP Chinese website');?>...

From [PHPdiscussion group] 2018-08-20 17:27:01 0  6  1759

How can two two-dimensional arrays be combined into one array, with one as a key and the other as a value? ? ?

Array 1: $devicename = array( array('t0001'), array('t0002'),

From [PHPdiscussion group] 2017-12-01 11:08:44 0  1  1759

mysql_quey, abolish it, what should I do?

mysql_query abolished

From [PHPdiscussion group] 2017-11-18 19:52:51 0  5  1758

Fatal error: Class 'app\admin\model\Collection' not found

An error will be reported. How to deal with this?

From [PHPdiscussion group] 2018-07-20 15:00:31 0  2  1757