PHP

1. Evaluate the length, the most basic $ Text = "Sunny Day "; $ COUNT = strlen ($ text); // $ COUNT = 9 2 string TruncationNumber of characters before Truncation$ Article = "Breaking news: In Ultimate irony, man bites dog."; $ summary = substr_

The output control function does not affect the header information sent when header () or setcookie () is used. It only applies Code . Let's take a simple example to give you a general impression on Output Control:Example 1.PHP codeCopy codeThe

The principle is as follows: Encryption Plaintext: 1010 1001 Key: 1110 0011 Ciphertext: 0100 1010 The ciphertext 0100 1010 is obtained, and the decryption must be different from the key or lower. Decryption Ciphertext: 0100 1010 Key: 1110

To implement gzip compression pages, the browser and the server need to support them. In fact, the server is compressed. After being uploaded to the browser, the browser decompress and parse the files. We don't need to worry about browsers, because

Below Code: Copy codeThe Code is as follows: The usage is like this.Setmycookie ('name'); in this way, a cookie named name is set under the domain name.PHP is easier to read.Copy codeThe Code is as follows: $ STR = $ _ cookie ('name'); // The

CopyCode The Code is as follows: // Upload file type list $ Uptypes = array ( 'Image/jpg ', 'Image/JPEG ', 'Image/PNG ', 'Image/pjpeg ', 'Image/gif ', 'Image/BMP ', 'Image/X-PNG' ); $ Max_file_size = 200000; // size limit of uploaded files, in bytes

CopyCode The Code is as follows: // Specify the page encoding to prevent Chinese garbled characters Header ('content-type: text/html; charset = gb2312 '); // Start Excel$ Ms_excel = new COM ("Excel. application") or die ("cannot open an Excel

First look File interface before creation After the configuration file is created, the system prompts that the installation cannot be repeated. NextCodeRight, the code on the HTML interface will not be available. Just go to the PHP

CopyCodeThe Code is as follows: // Define variables $ Local_file = 'local.zip '; $ Server_file = 'server.zip '; // Connect to the FTP server $ Conn_id = ftp_connect ($ ftp_server ); // Verify the Login Server $ Login_result = ftp_login ($ conn_

CopyCode The Code is as follows: Global $ php_self; // Echo $ php_self; $ T1 = $ _ post ['textfield1']; $ T2 = $ _ post ['textfield2']; $ T3 = $ _ post ['textfield3']; $ T4 = $ _ post ['textfield4 ']; // Chinese Character -- location code If ($ T1! =

Copy Code Save it as CS. php. To save it as another name, modify the line . Copy code The Code is as follows: Function zhuanhuan (){ $ Urlodd = explode ('/', $ _ Get ["url"], 2); // divide the link into two sections. // The first section is the

Therefore, the first step is to extract the data from the Excel file. Here I used an open source PHP processing Excel class: phpexcel. Detailed information for this project http://phpexcel.codeplex.com /. I currently use phpexcel1.7.3. After

In particular, it is impossible to know which spider has accessed this site, the frequency of access, the page, and General website statistics. Although I know little about PhP, but with the development experience of. net, Baidu is still very

1. When file_get_contents can be used to replace file, fopen, feof, fgets, and other methods, try to use file_get_contents, because its efficiency is much higher! Note the PHP version of file_get_contents when opening a URL file; 2. Perform as few

CopyCode The Code is as follows: // $ rptype = 0 indicates that only the HTML Tag is replaced. // $ Rptype = 1 indicates replacing the HTML Tag and removing consecutive white spaces // $ Rptype = 2 indicates replacing the HTML Tag and removing all

PHP supports two automatic loading methods. The first scheme uses _ autoload, which is relatively simple and weak. But there is a problem that cannot be solved, that is, to determine whether the file exists before include. CopyCode The Code is as

File_exists () check whether the file or directory exists Description Bool file_exists (string filename) If a file or directory specified by filename exists, true is returned; otherwise, false is returned. The dirname () function returns the

Counterfeit referer instance code, mainly used for breaking through anti-leeching, slice, software, etc. The complete program is provided here. You can modify the specific application on your own.The example I provided here is very simple. In fact,

Copy codeThe Code is as follows: $ Url = 'test. php? 1 = 1 '; $ Contents = "fjka; fjsa; # page # generate files in batches and add paging code "; $ Ptext = '# page #'; ContentsPages ($ url, $ contents, $ ptext) /** * Function name: ContentsPages *

What is a magic function? For functions starting with _, they are named Magic functions. These functions are triggered under specific conditions, such as _ set () _ get (). Triggered when setting or retrieving nonexistent attributes. What about the