In PHP, how to encode the generated verification code image into base64?

PHP server Android client I need to encode the verification code image generated by the server into base64. Note: Instead of generating a display image, the generated image resource is directly encoded into base64 so how to do? ? ? ? ? ? ?

阿神 2017-05-27 17:42:38 0  2  1655

PHP uses sleep to implement scheduled tasks. How to quickly return information prompts after sleep?

PHP uses sleep to implement scheduled tasks. After sleep, how to quickly return information prompt sleep(3); how to quickly return information without a three-second delay. It seems to be a bit conflicting, but I don’t know how to end it.

小破孩 2019-07-01 15:09:04 0  3  1529

html5 form validation

How are the native verification boxes in HTML5, such as required, pattern, etc., implemented when the verification is invalid? Why does a prompt box with different content pop up when it is invalid because different constraints are not met? Is it implemented by combining the invalid event and the va...

天蓬老师 2017-07-06 10:35:42 0  2  1165

javascript - Implementation of multiple ring menus on the page? Waiting online, urgent! God save me!

I need to implement multiple ring menus on the web page, which are placed randomly. But now I have copied two ring menus, but the submenu of the second menu cannot be displayed? Please tell me how to encapsulate this js. Is the position calculated using js? {code...}

女神的闺蜜爱上我 2017-06-12 09:31:45 0  2  872

After the search method is encapsulated, an error is reported when running

Why does it report an error when I encapsulate the search method? The code is the same as the teacher's, but when I run it, it reports: Cannot read property 'toLowerCase' of undefined. Does anyone know the reason? Thanks

回眸的冷漠 2018-11-20 17:24:32 0  0  1111

golang - What are the usage scenarios of using yield to implement coroutines in php?

I saw an article about PHP using coroutines to implement cooperative multitasking, which was about implementing coroutines through PHP's yield. But the article was too long and I didn’t finish it, so I briefly read it. When will PHP coroutines be used in projects? Or is there any applicable scenario...

某草草 2017-07-03 11:40:23 0  3  1613

Official team, please solve the bug

I use PHP version 5.4 of the PHP toolbox, and the verification code can be displayed, but it cannot be displayed when I switch to PHP version 5.6 or 7. What I tested was the verification code class that comes with the tp5 framework. What's going on?

冷笑浅兮 2017-11-12 23:08:40 0  3  938

javascript - The method of mounting to window cannot be executed?

{Code...} This is an encapsulated script. But how to call bbb outside? aaa is mounted on the window, but aaa.bbb() cannot be executed.

大家讲道理 2017-05-19 10:14:29 0  2  679

php - laravel5.4 gets a 422 return when submitting the form through ajax, and ajax cannot capture the return content

1. Submit the form through ajax. If the verification fails, json2 with an http status value of 422 will be returned. How to customize the format of this json? 3. The http status value is 422, which seems to have been hard-coded in the framework. I want to return custom json to the front end by catch...

PHP中文网 2017-06-21 10:10:48 0  1  692

How to decode COCO RLE binary mask to image in JavaScript?

Here is an example of a COCORLE mask - https://pastebin.com/ZhE2en4C This is the output of a YOLOv8 validation run, taken from the generated Predictions.json file. I'm trying to decode that string in JavaScript and render it on the canvas. The encoded string is valid because in python I can do this:...

P粉709307865 2023-12-07 10:08:08 0  1  680

java - Problem with separating verification code from front to back end

Premise: Suppose I have an interface for obtaining verification codes. It is under https://api.b.com/captcha. In my imagination, the verification code refreshing function is implemented by adding a timestamp after the url, for example, changing the url to look like this: https://api.b.com/cap. ..

淡淡烟草味 2017-06-12 09:20:13 0  1  1188

How to add login verification to the backend templates on and off the website?

The website provides many templates for the backend management system, all of which are in HTML. I have only learned PHP jump verification. I would like to ask how to add login verification to HTML. It seems that PHP's $islogin cannot be added to the HTML file. Judging, the session cannot be read, s...

phpcn_u14927 2017-08-12 17:19:25 0  1  1448

Verification code generated using think-captcha in thinkphp5 is not displayed

The verification code generated using think-captcha in thinkphp5 does not display. The generated verification display is as follows. Baidu said to add \think\Route::rule('captcha','index/captcha'); in line 39 of helper.php under captcha, but still Can't show new people please give me advice

crazier 2017-09-04 16:03:55 0  1  1998

ldap_bind reports an error, please solve it

Dear heroes, every time I run $bd=ldap_bind($conn,$user,$password);//During user verification, if it is True, the IF statement will be run, but if it is wrong, the IF will not be displayed. Instead of "Binding failed", the following error is displayed. What is the reason? Thank you. PHP Wa...

齐格飞啊飞 2021-11-01 15:09:22 0  2  1207

The form and back-end database verify whether the account password is correct. Errors are displayed on the current page without jumping.

I wrote a form. In php, I want to directly connect to the backend database for verification by clicking login. If it is correct, it will be adjusted directly to the next page. If it is incorrect, the information about the wrong account and password will be displayed directly on the login page withou...

哈哈哈哈。 2018-07-12 07:44:14 0  4  1406

How to use file_get_contents to open a php file, search for the specified string, and add other content under it in a new line?

I want to implement a function, because every time the system I use is updated, it will overwrite the piece of code I added. I want to implement this function. If it overwrites my code, I will open that piece of code and add it again. This is this code. If it is covered, I will open this file php fi...

淡淡烟草味 2017-06-28 09:23:06 0  3  988

Correct values ​​were not returned after upgrading PHP 5.4 to PHP 7.4.

I'm trying to get some scripts that run on PHP 5.4 to run on PHP 7.4. No syntax errors were detected except for an obsolete pass-by-reference error that has been fixed. In a certain part of the application I'm not getting the correct return value. I ran php7cc and PHPStorm to see if they could detec...

P粉718165540 2023-07-17 18:42:22 0  1  483

If the structure of your user table is different from that of auth that comes with laravel, how can you perform user authentication?

My user table structure is different from the table structure created by user verification in the laravel framework. For example, the default in laravel is to log in via email, but my user table does not have an email field at all. This can also be done through laravel's auth. To implement user veri...

PHP中文网 2017-05-16 16:50:30 0  1  721

javascript - Hybrid development, the difference between Android and Apple

Recently I made a hybrid development app and packaged it with hbuilder, as shown in the picture. The dragging function implemented by my code can be implemented on Apple phones, but not on Android phones. Why

淡淡烟草味 2017-07-05 10:51:14 0  1  965

javascript - How does axios handle errors of the same type uniformly?

{Code...} My question is: After I handle the validation error in the interceptor, how can I prevent the separate business processing in the page from executing?

巴扎黑 2017-05-19 10:10:54 0  1  567