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Invalid operation causes constant expression to be invalid

I have the following code and when I define a variable in the constructor I get the error "PHP fatal error: constant expression contains an invalid operation". It works fine when used in Laravel framework. <?phpnamespaceApp;classAmazon{protected$serviceURL=config('api.amazon.service...

P粉418854048 2023-08-22 20:09:10 0  2  665

$aa[bar] will report an error, right? PHP will consider bar as a constant.

$aa[bar] will report an error, right? PHP will consider bar as a constant.

紅月 2020-07-20 14:31:18 0  2  1307

About php dbf operation

Since I need to export it to a dbf file recently, I checked the information and learned that php needs to use the php_dbase.dll extension library. But the current 7.0-7.4 does not have this extension library, please give me some advice.

白云蒼狗 2020-06-07 19:43:32 0  0  983

PHP operation method

<?php$x = 5;$y = 6$water = $y-- + $x--;echo $water;The result is 13. Don’t understand? Find the algorithm for operation = 13 $paper = ++$x + $x++;$water = $y-- + $x--;echo $water + $paper;?>

愛心傳遞 2019-07-22 15:08:13 0  1  1406

How is this voting option adding operation named .php?

How is this voting option adding operation named .php?

盛情不舊゛ 2019-05-02 18:32:09 0  1  1496

php - Use of undefined constant 0 - assumed ' 0' when using substr

In PHP version 5.6, the substr function is used to intercept strings. The code is as follows {code...} Use of undefined constant 0 - assumed ' 0' appears. The online solution is to modify error_reporting in php.ini to turn off the notice. But what is this essential question? ? like...

迷茫 2017-06-10 09:47:52 0  2  1335

Why is the PHP configuration of predis operation redis cluster not recorded?

Why is the PHP configuration of predis operation redis cluster not recorded? 21-1 Is there a section in your hand at the end?

@smash 2019-06-29 09:38:32 0  0  1137

php - How to ensure data security when one operation requests multiple services?

An order operation to purchase goods. To simultaneously reduce user points, insert an order. In the same library, pessimistic locking can be added to the points table to prevent concurrently generated data from being read multiple times. Now that HTTP is used to request points service and order serv...

我想大聲告訴你 2017-05-25 15:08:18 0  3  957

php - When compiling and installing the lnmp environment in Linux, does the GD library need to be downloaded and installed separately?

PHP has its own gd library, but during compilation and installation, do you need to download and install the gd library separately? Or can you just use the one that comes with PHP? However, many people on the Internet do not directly use PHP's GD library, but download GD separately. Install.

大家講道理 2017-05-16 12:57:59 0  6  690

PHP automatically performs the login operation after discovering that the login has expired, and then continues the previous step.

Conditions: There is a third-party website, and every step of the operation needs to be logged in. Now I have built a simple front-end page and used PHP to make a springboard in the middle. Process: Every request on the page I built is transmitted to the PHP springboard through ajax, and then the PH...

暖暖橙 2022-06-13 15:06:16 0  1  1385

How to get the last offset in a topic from Kafka using php library?

I'm writing a Kafka consumer for an API project using the php-rdkafka library. I need to find the last offset in the topic and get the value from it for further processing. For example, last offset in topic = 5, then I need to get offset 5 and send it through API until new offset is added. What I'm ...

P粉763662390 2023-09-10 11:00:45 0  1  785

Error accessing class constant

Teacher, what is the reason for the error when using the object::class constant name method? Parse error: parse error, expecting `','' or `';'' in /Library/WebServer/Documents/lp/class_const.php on line twenty four

車*不息 2017-07-11 10:02:25 0  3  1833

javascript - How to provide a configuration file that can be modified by operation and maintenance for a front-end project compiled by webpack?

The project needs to use a url constant, which may change according to actual operation and maintenance conditions. Now when the URL changes, I need to change the source code and recompile. If you don't use webpack, this problem will not occur. Just tell the operation and maintenance the path to the...

巴扎黑 2017-05-19 10:15:02 0  2  581

PHP public method library

Can it be uploaded, or where can I find it? Thanks

『最美的時(shí)光』 2020-02-02 14:05:02 0  1  1085

PHP public method library

Where can I download the method library?

蔣亮亮 2020-03-28 15:19:54 0  2  1269

Why does STATIC reset an error?

<?php//Configuration file of the background module return [ //Replace view output string content 'view_replace_str' => [ //Reset _STATIC__ constant

2018-09-28 00:58:36 0  2  1435

What the hell

Use of undefined constant USER_ID - assumed 'USER_ID' (this will throw an Error in a future version of PHP)

笑的承諾-雷 2018-12-02 09:25:32 0  1  1124

PHP operates mongodb to query two tables

The official commands can be queried, but who knows the actual PHP operation?

Sinker 2018-07-31 15:14:20 0  1  1255

mysql - How to ensure data consistency under large batch update operations?

During the execution of the bulk update operation, the application layer is not aware of it. It only knows after the update is completed. The current method that comes to mind is the a/b library mechanism. Are there any other methods?

習(xí)慣沉默 2017-06-22 11:54:46 0  1  883

laravel framework service not loading?

I plan to perform some operations before the view is rendered: determine user permissions and display menus, etc. But now I encounter a problem. My operation process is: first add: AppLibraryViewComposerComposerServiceProvider::class to the providers of app.php, and then add /Library/V...

巴扎黑 2017-05-16 12:02:18 0  1  410