PHP Tutorials

Copy CodeThe code is as follows: Public Function Captcha () {$font _dir = $_server ["Document_root"]. "Your_ttf_file.ttf"; Font Library$img _w = 58; Set Picture width$img _h = 20; Set Picture height$font _size = 11; Font size$angle _l =-10; Left

But on the server, many use Linux server, the source program uses UTF-8, so it is easy to produce character encoding problem. If you just transcode the CSV file to UTF-8 so that there is no problem on the Windows Server, On RedHat5.5, in the array

Iconv-convert string to requested character encoding (PHP 4 >= 4.0.5, PHP 5) Mb_convert_encoding-convert character encoding (PHP 4 >= 4.0.6, PHP 5) Usage: String mb_convert_encoding (String str, string to_encoding [, mixed from_encoding]) Need to

Sort () Definition and usage The sort () function sorts the values of the given array in ascending order. Note: This function assigns the new key name to the cells in the array. The original key name is deleted. Returns TRUE if successful, otherwise

Array_sum () Definition and usage The Array_sum () function returns the sum of all the values in the array. If all values are integers, an integer value is returned. If one or more of the values are floating-point numbers, a floating-point number is

Copy CodeThe code is as follows: $fruits = Array ("155::vbscript::http://www.jb51.net/list/list_114_1.htm", "1::javascript::http://www.jb51.net/ List/list_3_1.htm "," 2:: Regular expression:: Http://www.jb51.net/list/list_6_1.htm "," 3:: Server

Array_key_exists () Definition and usage The array_key_exists () function determines whether the specified key exists in an array, returns TRUE if the key exists, or false otherwise. Grammar Array_key_exists (Key,array) Parameter description Key is

There are two forms of STRTR: String Strtr (String $str, String $from, String $to) String Strtr (string $str, array $replace _pairs) When the first type is used, the arguments $from, $to string lengths must be the same, otherwise the extra (either

Copy CodeThe code is as follows: /*** Judging whether the search engine spider** @author Eddy* @return BOOL*/function Iscrawler () {$agent = Strtolower ($_server[' http_user_agent ');if (!empty ($agent)) {$spiderSite = Array

Copy CodeThe code is as follows: function Get_word ($string, $length, $dot = '.. ', $charset = ' GBK ') {if (strlen ($string) return $string;}$string = Str_replace (', ', ' & ', ' ' ', ' '), Array (' ', ' ', ' & ', ' "', ' '), $string);$strcut = "

The code is as follows Copy the Code code as follows: $dir = ' D:\Program files\resource\application\skin\png\\ ';//pay attention to the path here, the last to add two \, the first one means to turn, but this is easy to encounter other specific

Copy CodeThe code is as follows: /*template.class.php@ Kang Shengweibo Template Extraction class think this template useful to spend some time independent out. by Rezhigin@ have a look at CTT this template is similar to Phpcms's template?? ^_^

Looking at the PHP manual, I found the following code: Copy the Code code as follows: function Test (){static $count = 0;$count + +;Echo $count;if ($count Test ();}$count--;}?> The results of the implementation are as follows: This is a

The most used non-array in PHP is, how is the array implemented? In the PHP internal array is implemented by a Hashtable, which uses the link method to solve the problem of hash conflicts, in the worst case, the complexity of finding the array

Copy the Code code as follows: $arr = Array (345,4,17,6,52,16,58,69,32,8,234);$n = count ($arr);for ($i =1; $i The reason why $n-1 is because the array is calculated starting from 0Next is the first internal loop.for ($j = $n-1; $j >= $i;

First, the basic knowledge This chapter briefly describes the internal mechanisms of some Zend engines, which are closely related to extensions, and can help us write more efficient PHP code. 1.1 The storage of PHP variables 1.1.1 Zval

This looks more humane, okay, on the code Copy the Code code as follows: Class Timeago{Static $timeagoObject;Private $rustle;Private $unit;Private Function __construct (){}Private Function __clone () {}public static function GetObject (){if (!

Copy CodeThe code is as follows: /* Declaration of Class* 1. What are you going to develop, determine what class to write* 2. Members of the class must belong to this class* [modifier class's Keywords] class class name {* Member Properties:*

To illustrate: In the Windows environment: Originally in the php4.3.0 running a normal program, in 4.3.1 why many error, the general tip is: notice:undefined varialbe: variable name. For example, the following code: Copy the Code code as

Copy CodeThe code is as follows: /* pre-defined array:* AUTO global variable---Hyper global array** 1. Contains data from the Web server, client, run environment and user input* 2. These arrays are more specific* 3. The global scope automatically