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  1630

There is a problem with the final call of php to implement image verification code?

According to php how to implement image verification code content guide encapsulation verification code class

罗梅光 2022-05-05 01:22:00 0  8  1131

java - Image verification code implementation principle

**Test website: http://con.monyun.cn:9960/acc... There is a verification code on this page. The url of this verification code is <img src="../aut_checkCode.hts?=0.8963835985936632" class="icd"> How to change the displayed image when clicking on the verification code...

怪我咯 2017-05-27 17:41:18 0  4  1044

python selenium gets image verification code

I want to cache the image verification code locally, and then let the user see the image through the web service and manually type the code to log in. Since the official operation is interface-less, selenium screenshots cannot be used. In addition to selenium screenshot and right-click method, is th...

PHP中文网 2017-06-12 09:21:28 0  4  1582

Image verification code reports error after using session

This is the effect when the session is not open (the picture of the verification code can be displayed normally) ------------------------------Gorgeous dividing line-- ----------------------------------------This is the effect after opening the session (no picture show)------------------------------...

富贵 2017-10-04 01:31:24 0  2  1399

Click to switch verification code error, cannot get the picture

Error: captcha:1 GET http://localhost/captcha?id=1504664532 404 (Not Found) Then the image obtained is the same as without setting the verification code.

清楚叛逆者 2017-09-06 10:23:40 0  4  1568

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  1952

The password generated by laravel Hash::make() is refreshed and changed every time. Please tell me how to verify the password.

The password generated by laravel Hash::make() is refreshed and changed every time. Please tell me how to verify the password.

習慣沉默 2017-05-16 16:50:08 0  1  524

How to get openid after scanning the QR code image generated with PHP?

I used the PHP QR code generation class library to generate a QR code picture (not generated by the WeChat interface). I want to get the openid of a WeChat user after scanning the QR code. How can I implement this function? (I previously thought of using web page authorization to achieve this, but t...

LRTRL 2017-06-28 16:57:44 0  1  1985

javascript - After following the WeChat official account, you will receive a picture with a WeChat avatar and a QR code. How was this image generated?

After following the WeChat official account, you will receive a picture with a WeChat avatar and a QR code. How was this image generated?

PHP中文网 2017-05-27 17:42:17 0  3  892

ajax - How to verify that a blob file is an image in laravel?

If the form is submitted in the normal way, there will be no problem with background verification: {Code...} However, if the formData object is used to submit, the image file will be converted into a blob file and cannot be verified: {Code...} How can it be verified in the background? Are blob files...

仅有的幸福 2017-05-16 16:49:55 0  3  770

Verification code input is inconsistent

The verification code is obviously the same as the picture, but it keeps prompting that the verification code is inconsistent and cannot be completed by refreshing like the teacher.

CiCi 2017-06-22 22:07:41 0  1  1086

php - How to output image in base64

It's like this. Today I wrote a template for PHP to generate verification codes based on the information on the Internet: {code...} But I don't want him to output the image directly, but output the image in base64. How should I do it? I have tried many methods without success, unless it is necessary...

伊谢尔伦 2017-05-24 11:32:19 0  1  863

The picture of the verification code cannot be displayed

It can generate four-letter words, but it cannot generate pictures. The caught exception prompts that var numtxt in the refresh method = req.session.validat_num = validat_num in r.random(4) is undefined. Does anyone know what is going on?

回眸的冷漠 2018-11-18 19:46:33 0  0  1334

java - spring boot framework uses restful to verify whether the username exists

When using restful style to verify whether the user name exists, all normal names can be verified, but when verifying whether the email address exists, no parameters can be accepted. The code is as follows {code...} The following is a picture of the test

女神的闺蜜爱上我 2017-06-28 09:25:42 0  2  1139

Why does my verification code only show one number?

//My code for this lesson is like this. I checked it several times and didn't see any errors, but the verification code displayed only has one number...Why is this happening? Please give me some guidance<?php// Generate the background header of the verification code('Content-type:image/jpeg'); //...

丫头 2018-04-21 11:01:31 1  5  2996

Refresh the image, no new image is generated.

Teacher Zhu, why do I write the refresh verification code according to your method (the code is the same, there is no mistake), and there are pictures when I log in for the first time, but there are no pictures after refreshing.

东郭 2017-08-27 02:06:28 0  2  1156

When writing verification code in PHP, the online code editor can display it, but when placed on the local website, the code is garbled?

<?php check_code(); // Randomly generate characters or numbers for the verification code function check_code($width=100, $height=50,$num=4, $type='jpeg') {

phpcn_u53259 2017-11-06 13:50:30 0  9  1208

html5 - Pictures generated by html2canvas, checkbox and radio selected items cannot be screenshotted.

Generate a picture through html2canvas, and find that the checkbox selected item does not take a screenshot successfully. {code...} page and production pictures:

我想大声告诉你 2017-05-16 13:32:24 0  1  1127

phpstorm registration code

I couldn't use the registration verification address attached to the PHP Chinese website. I found the cracked registration code online. This is a screenshot of my successful registration! Registration code address: http://idea.lanyus.com/getkey?userName=lan+yu

小生我怕怕啊 2018-07-05 11:23:36 0  6  6240