PHP

PHP addcslashes () functionDefinition and usageThe addcslashes () function adds a backslash before the specified character.SyntaxAddcslashes (string, characters) parameter descriptionString is required. Specifies the string to be checked.Characters

Copy codeThe Code is as follows: $ Str_ SQL _read = "select count (*) as num from userinfo "; $ Str_ SQL _del = "delete from userinfo where id = 1 "; $ Res = link_mysql ("read", $ str_ SQL _read ); $ Res_del = link_mysql ("delete", $ str_ SQL _del );

Method 1:Directly retrieve the tag Copy codeThe Code is as follows: // Retrieve the br mark Function strip ($ str) { $ Str = str_replace ("", "", $ str ); // $ Str = htmlspecialchars ($ str ); Return strip_tags ($ str ); } ?> Method 2.PHP has a

PHP has three access modifiers:Public (public, default)Protected (protected)Private)Public (public, default) in PHP5, if the class does not have an access modifier for the specified member, the default access permission is public.Protected

Use js to encode the Chinese characters in the URL. when you click the link: Reference: http: // 127.0.0.1/shop/product_list.php? P_sort = PHP % u5F00 % u53D1 % u8D44 % u6E90 % u7F51 It is obvious that the urldecode () or base64_decode () of PHP

Copy codeThe Code is as follows: // the definition of the abstract class: Abstract class ku {// define an abstract class Abstract function kx (); ...... } Function aa extends ku { // Method for implementing the abstract class Function kx (){ Echo

We all know that there are many ways to delete array elements in PHP. Commonly Used functions include array_unique () in php (). The PHP function array_flip () introduced today is about five times more efficient than the array_unique () function in

We encountered the following problem when dealing with the deletion of specific characters at both ends of the string. Let's look at the example first. $ Str = 'akmumu/writedb. json ';What I want to do is to delete the starting akmumu and then

If you don't talk much about it, go directly to the Code: Copy codeThe Code is as follows: Class GetPingYing { Private $ pylist = array ( & Apos; a & apos; = & apos;-20319 & apos, 'Ai' =>-20317, 'Any' =>-20304, 'Ang '=>-20295, 'Ao' =>-20292, 'Ba' =>-

The principle is very simple, because gb2312/gbk is a Chinese byte, the two bytes have a value range, while the Chinese character in UTF-8 is three bytes, and each byte also has a value range. The English language only occupies one byte (excluding

Copy codeThe Code is as follows: // get the redirection address Class RedirectUrl { // Address Var $ url; // Initialize the address Function RedirectUrl ($ url ){ $ This-> url = $ url; } /** * Get_redirect_url () * Get the redirected address * * @

Example code 1: Use file_get_contents to get content in get Mode Copy codeThe Code is as follows: $ Url = 'HTTP: // www.baidu.com /'; $ Html = file_get_contents ($ url ); // Print_r ($ http_response_header ); Ec ($ html ); Printhr (); Printarr ($

Copy codeCode: function remote ($ urls, $ name = '', $ path ='', $ dir = './images /'){ If (! Is_array ($ urls) or count ($ urls) = 0 ){ Return false; } Dmkdir ($ dir ); $ Curl = $ text = array (); Foreach ($ urls as $ k => $ v ){ If (! Empty ($ v) &

Gurl $ Rfurl. If the target image has anti-leech settings, you can bypass it. $ Filename: the file name for downloading the image, relative path. Do not use realpath. $ Gcookie: Adjust cookie forgery $ JumpCount jump count $ Maxtime maximum

First: operate using string functions Copy codeThe Code is as follows: Function createRandomStr ($ length ){ $ Str = '0123456789abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz '; // 62 characters $ Strlen = 62; While ($ length> $ strlen ){

By applying sorting logic between nodes, a binary tree can provide an excellent way of organizing. For each node, the elements that meet all specific conditions are placed on the left node and Its subnodes. When inserting a new element, we need to

About current () functions: Each array has an internal pointer pointing to its "current" unit, initially pointing to the first unit inserted into the array. Use current. Similar functions: End () moves the internal pointer of array to the last

Argc and argv are useful when compiling programs using command linesWe will find this parameter in the scheduled task script, $ obj-> run ($ argv [1]);*/30 */usr/local/bin/php/htdocs/test.com/uaqm/commands/test.php 1>/dev/null 2> & 1Like the

There are actually many methods. Iframe is commonly used in the past. Now there is more ajax, so ajax is usually used.The first method is ajax implementation:Of course, ajax can be implemented easily, but there is a lot of knowledge in it. I used

Because PHP file system operations are based on C-language functions, it may handle Null characters in unexpected ways. The Null character is used in the C language to mark the end of a string. A complete string starts with it and ends with a Null