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How to save a good verification code image locally in php?

Use PHP to draw login verification pictures. Since the pictures are taken locally, I don't want to return the picture in the form of a link. I want to name the drawn verification code picture, then save it to the specified path, and then return a local URL address. To the front desk, the front end d...

phpcn_u1582 2017-05-16 13:04:04 0  2  687

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

羅梅光 2022-05-05 01:22:00 0  8  1263

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?

冷笑淺兮 2017-11-12 23:08:40 0  3  1024

Verification code cannot be displayed

When logging in, a verification code starts to appear. When you click "Change", the verification code does not appear. Ask an expert for help.

☆ 宇軒 ☆ 2018-04-28 18:28:59 0  1  1432

The PHP verification code is fine locally, but when it is placed on the server, the verification code is not displayed and an error is reported in the verification code line.

<td align="left"><input type="text" name="vcode" id="vcode" style="width:54px" class="input">&nbsp;<a href="javascri

蕭瑟寒風蕭瑟雨 2019-05-16 10:04:56 0  1  974

dologin said it is not defined

The code is the same, but the verification class does not take effect, and there is no response when logging in.

******ton Cheng 2021-01-25 17:09:09 0  1  1271

The verification code always reports an error, as shown in the figure

As shown in the picture

天若有情 2019-08-13 11:32:47 0  2  1309

How to embed php in HTML attribute?

For example, I have a page that mixes php and html. The php part stores a variable: {code...} In HTML, I want to use this variable in the attribute of an element: {code...} For example, here I I want to make the value of the class of this div active, which is just stored in the $class variable in ph...

曾經(jīng)蠟筆沒有小新 2017-05-24 11:34:16 0  1  761

java - abstract inner class + generics

Simple inner class usage: {code...} Add generics to the above example {code...} Call the inner class in the test method and compile correctly. An error is reported in the main method, which cannot be referenced from a static context. If you call an internal class in another newly created class, no e...

給我你的懷抱 2017-05-17 10:00:28 0  1  983

In php, the class name::class, what does it mean?

I would like to ask: In the following PHP code, what does the class name::class mean? {code...}

曾經(jīng)蠟筆沒有小新 2017-06-30 09:54:29 0  2  1002

php - How to add methods to an instance?

{Code...} If there is already an instance of class A, how can this instance also use the test method? What should I do if class A cannot be modified in php and python? If possible, use other packages when writing php before. , you will encounter that the call result returned is already an instance o...

某草草 2017-06-29 10:07:59 0  2  935

php - Verification code is available under windows, but not in centos?

The font is in $this-&gt;font = dirname(__FILE__).'/font/elephant.ttf'; Display background: {code...} Display code: {code...} Verification code can be displayed in windows , as follows: This is the only way in centos

為情所困 2017-06-30 09:53:14 0  2  968

After adding the judgment condition, the page will report an error and will not jump!

After adding the conditions to determine whether to log in, the page reports an error and does not jump to the specified page. What is the problem? Seeing this verification code reminds me of another tutorial where the verification code is always not displayed. , the background is this captcha.html ...

薩格拉斯 2020-04-13 12:23:40 0  2  1048

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  1762

java - this in anonymous inner class, how to get in lambda?

{Code...} If the above code is converted into lambda, this will point to the external class, and the listener cannot be removed at this time. So I would like to ask, how can an anonymous inner class (an anonymous inner class that can be converted to a lambda) obtain itself in the lambda?

阿神 2017-06-23 09:13:26 0  2  1249

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. ..

淡淡煙草味 2017-06-12 09:20:13 0  1  1318

The verification code in the Thinkphp5 teaching management system keeps prompting an error and cannot be logged in.

SEC 2017-09-06 12:56:45 0  4  1688

java - Convert list<bean> to a list of another bean.

{Code...} I need an operation similar to the following. {Code...} reports an error of an unconvertible type. DataBean is an internal static class. There is reinterpret_cast in C++ that can force conversion, and Java should have a corresponding method.

PHP中文網(wǎng) 2017-05-17 10:07:31 0  4  1191

About chain calls in PHP

I encountered a problem when chaining calls with PHP: There is a class "Site" below: {code...} There is also a class "Api" located in "class.Api.php": {code...} Use the following code to instantiate: {code...} Then call the following code: {code...} Will PHP repeat requ...

天蓬老師 2017-06-19 09:07:08 0  2  986

Problems with events in Symfony2

Today I looked at the event chapter in symfony and did an experiment myself, but there is one thing I don't quite understand. I first defined an Eents enumeration class to manage all events {code...} and defined an event {code...} in HomepageBundle and then in FileBundle...

天蓬老師 2017-05-16 16:44:46 0  1  609