The following is a method: If (! Function_exists ('imagecreate ')){Die ('the current server does not support GD module ');}If not, how can I configure it? Download the dll file of the gd module, modify php. ini, and restart the server.The PHP plot
MySQL and GD support is required. in linux, php4RC1 is passed, which is also in use in my system. & Lt ;? The hit_countpage_visit_record table of the php *** hit_count table is used to control the one ip address to generate only one counter in one
Recently I am learning about php, but now I am just getting started, so I don't know much about it. I just learned from the basics and won't go online, then remember it in this magic weapon, just as today we met the function rand (). I thought about
PHP generates a website verification code for the snowflake background. The reference content is as follows :? Session_start ();? FORMMETHODPOSTACTIONinputtypetextnamenumbermaxlength4imgsrcYanZhengMa. php? ActinitINPUTTYPEsubmitnamesubFORM? Check
Fwrite (file handle, write content) return value is the length of bytes written to the filefopen (file path, open mode) This is the file handle.Fclose (file handle) Close file handleAfter the file handle is opened, you can read and write to the file,
This article to introduce the PHP generated snowflake background Verification Code program codes, the need for friends to enter the reference.
Verification Code Generation Program
The code is as follows
Copy Code
Previously did a recruitment site so we need to let not collect our customer's mobile phone number and email address, so we will use PHP to realize from the database read the mobile phone number and email address directly generated a picture, so
This article provides a PHP tutorial to generate a detailed tutorial of verification code, the first is about the build validation core code, followed by a build and Invoke method.
Header ("Content-type:image/png");$num = ' 1234
The image cannot be displayed due to its own error code:
Add ob_clean () according to the online method ();
Also change the document format to utf-without bom
Why is there an error?
Reply to discussion (solution)
Ob_clean (); header
Objective:Now, more and more people like to surf the internet, more and more people have their own personal homepage. With the advent of various automated software tools, it is becoming easier to make Web pages. But, because the special effects are
Some time ago read some of the verification code of the article, that is, a series of randomly generated numbers or symbols, create a picture, the picture with some interference pixels (to prevent OCR), by the user's naked eye identification of the
Open GD Library is an important parameter in PHP, commonly used to deal with images, such as images of any processing requires the support of the GD library, below I introduce the various systems of GD library open methods and commands, we can refer
PHP website verification code, how does PHP generate the verification code, PHP generates the website verification code with the background, PHP generates the website verification code, and PHP generates the verification code
// Check the
Here's the code:
Copy CodeThe code is as follows:
$id =$_get[id];
Include ("admin/config.php");
$sql = "SELECT * from user where id= $id";
$data =mysql_fetch_array (mysql_query ($sql));
$p =sbc_dbc ($data [phone],1);
function Get_str ($str,
Image stretch encapsulation and image stretch EncapsulationThere are three ways to achieve image stretching. 1. directly modify the image resources. 2. You can directly modify the stretching through the image box.
3. through code implementation //
PHP class 10 PHP image processing functions and verification code implementation, php Image Processing
If you like this blog, visit this blog address: http://blog.csdn.net/junzaivip
Summary:
Gd library drawing:
Mathematical functions
PHP image
I try not to talk about big theory, for example, what is PNG.
PHP has bound its own GD2 Library since version 4.3. You can download and set it yourself. to check whether your PHP version supports the GD module (supports JPEG, PNG, wbmp, but does
GD library functions
1, imagecreatetruecolor ----- create a true color image
Imagecreatetruecolor (INT x_size, int y_size) // X indicates width, and y indicates height.
2. imagecolorallocate allocates color to an image (color
Original Web site: http://www.blogwind.com/Wuvist/comment.aspx? Article _id = 5421
Author: wuvist
Please indicate the source and my name of the original article for the interpreter. Thank you ...... If you need to use the JavaScript function in the
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