Recently in the preparation of a library management program, you need to verify the correctness of the ISBN code of the book, check some information to understand the composition of the ISBN code of the book, the details can refer to: ISBN - Wikipedia, the following is a brief description of what ISBN code: International Standard Book Number (ISBN; is-ben), is an internationally accepted or independent publication (except for regularly published journals). Publishers can be clear by ISBN ...
Just install some third-party library files and have a certain degree of geometric knowledge, you can use PHP to create and process images. Creating a dynamic image with PHP is fairly easy. Below, I will detail how to achieve. Before using the basic image creation function, you need to install the GD library file. If you want to use JPEG-related image creation functions, you also need to install jpeg-6b, and you must install t1lib if you want to use Type 1 fonts in your images. In the establishment of the image creation environment, but also need to do some quasi ...
Php code <? Php // Method one: function extend_1 ($ file_name) {$ retval = ""; $ pt = strrpos ($ file_name, "....
An array is a of data that organizes a series of data to form an operational whole. Each entity in the array contains two keys and values. First, what is the array Array is data, a series of data organized together to form an operational whole. Each entity in the array contains two keys and values. Second, the statement data There are two main ways to declare an array in PHP: First, the array () function declaration array, one is directly assigned to the array element. Fei Fei Asp! Technology Paradise <1> array () function ...
php tutorial Alipay interface program source code (full version with examples) Now popular website support platform, Albatrosal doing my part, now we will tell you how to use Alipay api to do third-party payment, Alipay into their own website to Kazakhstan. * / //alipay_config.php Configuration program $ interfaceurl = "https://www.alipay.com/payto:"; $ sitename = & qu ...
An example of PHP tutorial image watermarking, cut the head like a picture and automatically zoom code, he can upload your pictures to generate the specified size renderings and pictures can be automatically cut, see the following example. <html> <head> <meta http-equiv = "content-type" content = "text / html; charset = gb2312"> & ...
php tutorial read sql file into the database tutorial (support phpmyadmin export) like this php read sql file into the database, the most used is the database backup and restore to, the principle is very simple according to the specified format into a .sql file or Export using phpmyadmin can be used to achieve the import Oh. * / function into_sql ($ file) {global $ mysql tutorial _host, $ mysql_us ...
Article provides a php tutorial to detect the file type (based on the file header information) Oh, he can according to the user's header file information to confirm the type of file. <? php / * By file name, get the file type * * @ author chengmo * * @ copyright cnblog.com/chengmo 2010-10-17 * @ version 0.1 * $ filename = "d: /1.png"; ec. ..
The contents of the database tutorial to save the file in an array Here to save the commonly used content in the database to a standard php format file, it is also more convenient to use, the following code. * / $ res = mysql tutorial _query ("select k1, k2 from" .table ('keywords'). ""); $ str = "<? php rn" ...
The difference between 1.echo and print echo and print in PHP basically the same function (output), but there are still some nuances between the two. echo output does not return a value, but print returns the value, when its implementation fails to return flase. Therefore, it can be used as a normal function. For example, after executing the following code, the value of variable $ r will be 1. Copy PHP content to the clipboard PHP code: $ r = print "Hello World"; This means print ...
Single quote within the variable does not execute double quotes will be executed, such as $ name = 'hello'; Echo "the $ name"; Will output the hello And if the single quotation marks $ name = 'hello'; echo 'the $ name' The main difference that will output the $ name is this.
sql generic anti-injection system This article provides anti-sql injection code is a php tutorial sql double filter illegal characters function, he can be based on user-defensive SQL injection Oh, first filter some sql command, then the post get filtered once, the best validation. * / / / Anti-injection $ arrfiltrate = array ("update", "delete", "selert", & ...
Three PHP tutorial Chinese verification code generation and transfer method Generate Chinese verification code in PHP must be generated and generated verification verification code is not the same operation, because gd function only accepts utf8 format encoded text, so use php to generate Chinese verification Before the first code to be encoded conversion, operation iconph icon can be an instance of PHP. * / $ ch_str = "Chinese characters you want to generate Chinese characters"; $ str = array (); for ($ i = 0; $ i <strlen ($ ch_s ...
PHP Zip unzip files online decompression function code / ********************** * @ file - path to zip file * @ destination - destination directory for unzipped files * / function unzip_file ($ file, $ destination) {// create object ...
When we write the file upload code, we also need to consider an important realization of the function, that is, the progress of the required file upload. Currently I know PHP file upload progress bar in two ways, one is to use APC extension module written by PHP founder Rasmus Lerdorf to achieve, the other method is to use PECL extension module uploadprogress achieve. PHP-based application-specific AJAX analysis PHP restrictions on the specific size of the file upload solution PHP batch upload pictures of the specific implementation of the ...
php tutorial generic anti-injection is mainly to filter some sql command and php post get pass over reference / we want to filter some illegal characters, so that you can prevent the basic injection, and that off the apache server installation settings method is also necessary. Administrator user name and password are taken md5 encryption, so that we can effectively prevent the injection of php. There are servers and mysql tutorials should also strengthen some security precautions. For linux server security settings: encrypted password, use "/ usr / sbin / authconf ...
php mysql tutorial to get all the specified database table name If you want to display mysql a specified database table name is very simple, mysql provides a show tables command, it returns a data, let me look at the detailed examples, Tested fully available * / $ cn = mysql_connect ('localhost', 'root', 'root'); mysql_select_db ('test', $ cn); print_r ...
Php tutorial pattern verification code generation code and include ajax verification example application previously written verification code program is to provide the source code, but did not really figure verification code generated to verify the instance, this time we have a complete example of PHP validation It's There are 3 files: authcode.php ----- verification code generation php file authcode.html ----- front display page dealauthcode.php ----- ajax submitted to the background processing to determine the verification code is correct Processing page ...
Php tutorial simple Chinese word segmentation system structure: the first hash table, trie index tree node Advantages: word segmentation, do not need to predict the length of the query, along the tree chain verbatim match. Disadvantages: Construction and maintenance is more complex, word branches are more, wasting some space. * @version 0.1 * @todo Constructs a common dictionary algorithm and writes a simple word segmentation * @author shjuto@gmail.com * trie dictionary tree * * / class trie {& nb ...
php tutorial to remove the timestamp on Monday and Sunday can take over the following two examples of the timestamp on Monday and Sunday can see a lot of things, to keep thinking Oh, the first custom time stamp out the specified date Better, but it's more practical to take out the second one on Monday and Sunday. * / function getmonsun () {$ curtime = time (); ...
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