PHP

Curl Library can be simple and effective to grasp the Web page, you only need to run a script, and then analyze the pages you crawl, and then you can get the data you want in the program. Whether you want to take part of the data from a link, or

Error_reporting () php.ini and http.conf configuration error messagesError_reportingConfigure the level of error message return.Syntax: int error_reporting (int [level]);return value: IntegerFunction type: PHP system function This function is used

PHP Array Operation Instance TutorialEach cell in the data array represents a row in a table. This is the typical way the database holds array data.The data in the example are as follows:Volume | Edition-------+--------67 | 286 | 185 | 698 | 286 | 66

PHP Cookie Setcookie Use instance Session and cookie functionality. Cookies are the easiest way to permanently maintain user information. Here I will give you a detailed explanation of the function of cookies and how to use them. One: Set

]$host = "www.123cha.com";$referer = "http://". $host;$fp = Fsockopen ($host, $errno, $errstr, 30);if (! $fp) {echo "$errstr ($errno) ;n";}else{$request = "get/http/1.1Accept:image/gif, Image/x-xbitmap, Image/jpeg, Image/pjpeg,

PHP cookie settings, JS cookie Setup method Untitled Document ?$value = ' Oicq ';$array = Array (20,25,26);$aid = $array [Mt_rand (0,2)];Echo $aid;if (Empty ($_cookie["Cook")){echo $_cookie["Cook"];}Else{Setcookie ("Cook", $value, Time () +7200, "/")

PHP serialize,unserialize function We often see serialize,unserialize these two functions in PHP, so what are their roles? Serialize can convert any data into a stored character oh, and then unserialize restore, here we look at An instance.

Define (' IP ', IP ());Define (' Http_referer ', isset ($_server[' http_referer ') "$_server[' Http_referer ']:");Define (' Script_name ', isset ($_server[' script_name ')? $_server[' Script_name ']: Preg_replace ("/() *). PHP (. *)/I", "\ 1.php ", $

function browsers () {Global $HTTP _user_agent;if (Isset ($HTTP _user_agent)) {$sAgent = $HTTP _user_agent;}else{$sAgent = $_server[' http_user_agent '];}if (Strpos ($sAgent, ' Msie ')!== false && Strpos ($sAgent, ' mac ') = = False && Strpos

Function Connect ($dbhost, $dbuser, $DBPW, $dbname = ', $pconnect = 0, $halt = TRUE, $dbcharset 2 = ') { $func = Empty ($pconnect)? ' Mysql_connect ': ' Mysql_pconnect ';if (! $this->link = @ $func ($dbhost, $dbuser, $DBPW, 1)) {$halt &&

substr instance $content = ' I love you www.111cn.net '; $temp = substr ($content, 4); Echo $temp; Results: Love you www.111cn.net '// Let's take a look at the function from the right. $temp = substr ($temp, 0,-4); The results are: I love

/*y:09.05.05A:jimmyLogin*/ The program starts with instructions. Include ("inc/conn.php");Include ("inc/function.php"); Public files all include in $integrals = get_value (' integrals ', 0); $uid = get_value (' id ', 0); Get the data writing

The following method can be used to quickly obtain image size information:1. Get the size information of JPEG images The code is as follows:Copy code /** Get the size information of JPEG images without the need to download/read the entire image.*

The code is as follows:Copy code /*** Collect webpage content based on URLs** @ Param string $ url* @ Return string*/Private function fetchbyurl ($ url ){$ Handle = fopen ($ url, 'r ');$ Content = ";While (! Feof ($ handle )){$ Content. = fgets ($

You can design anti-Leech protection for your host, including image anti-Leech protection and download anti-Leech protection, for example:Use. htaccess to set anti-Leech The code is as follows:Copy code RewriteEngine onRewriteCond %

The matching rule cannot use "// /I", because it cannot match the line break, so multiple lines of js won't match. To use "// // I ". Inside? Indicates that there are as few duplicates as possible, that is, matching the latest script.Source code

Example: use cooikes The code is as follows: Copy code Session_start ();// Save for one day$ LifeTime = 24*3600;Setcookie (session_name (), session_id (), time () + $ lifeTime ,"/");?>

For functions, we can use the following methods to directly set the timeout time for the function. The code is as follows: Copy code Declare (ticks = 1 );Function (){Sleep (10 );Echo "a

Let's look at an example.1, 2, 3, 4, 5If the five above are IDs, I want to sort the previous pages directly usingOrder by id descIf my current ID is3So we only use 2 for the next page.Order by id ascThe sorting result should be,4The principle is so

The core code directly generated by php using fopen is The code is as follows: Copy code '. your stored data. ' Example The code