PHP

_ File _ is the complete path and file name of the returned file. If it is used in a include file, the include file name is returned. Starting from PhP 4.0.2, __file _ always contains an absolute path, while earlier versions sometimes contain a

1. Why does PHP require asynchronous operations? In general, PHP is applicable to web page display tasks that are time-consuming. If you want to perform time-consuming operations such as resize images, big data import, Batch Sending of EDM and SMS,

I. Class Document Description Copy codeThe Code is as follows: class Image_Tool { /** * Construct the Image_Tool object * @ Param string | array $ img_data * $ Img_data can be the image path */ Function _ construct ($ img_data = ""); /*** Add text

The basic operation of insert sorting is to insert a data to an ordered data that has already been sorted, so as to get a new ordered data with a number plus one. Algorithm Description: The sequence starts with the first element, which can be

In the long talk, I am confused about many people's problems. If they are not well handled, they are all garbled characters. I am not very proficient in coding, but I have to be careful in this regard, I have summarized a little experience (PHP

First, explain separately, Trim filters both ends of a string,Rtrim filters the tail of the string, = chop ()Ltrim filters the string header. You can only use str_replace to filter the middle keys in a string.For example, PHP code Copy codeThe

When building a website, programmers prefer the PHP language. We are still familiar with PHP. Next we will introduce the PHP recursive algorithm. PHP, an abbreviated name for nesting, is the abbreviation of the English Super Text preprocessing

Copy codeThe Code is as follows: // Mobile phone number verification Function checkMobileValidity ($ mobilephone ){ $ Exp = "/^ 13 [0-9] {1} [0-9] {8} $ | 15 [1, 012356789] {1} [0-9] {8} $ | 18 [012356789] {1} [0-9] {8} $ | 14 [57] {1} [0-9] $ /";

Test.html Copy codeThe Code is as follows: click Function ajax_init () { Var ajax = false; Try { Ajax = new ActiveXObject ("Msxml2.XMLHTTP "); } Catch (e ){ Try { Ajax = new ActiveXObject ("Microsoft. XMLHTTP "); } Catch (E ){ Ajax = false; } } If

Mysqli is only available after php5. If you have not enabled the extension, you can open your php. ini configuration file.Find the following statement:; extension = php_mysqli.dll and change it to extension = php_mysqli.dll.Compared with mysql,

Curl sends the request file fake_ip.php:Code Copy codeThe Code is as follows: $ Ch = curl_init (); $ Url = "http: // localhost/target_ip.php "; $ Header = array ( 'Client-IP: 58.68.44.61 ', 'X-FORWARDED-FOR: 58.68.44.61 ', ); Curl_setopt ($ ch,

Remember, you can use it directly when you need to use it in the future, or you can click here to view this article. Copy codeThe Code is as follows: // Method 1: Function extend_1 ($ file_name) { $ Retval = ""; $ Pt = strrpos ($ file_name ,".")

Is_numeric: checks whether it is a numeric string, which can be a negative number or a decimal number. Ctype_digit: checks whether all characters in a string are numbers. Negative and decimal digits cannot be detected. Note that the parameter

First, let's take a look at the definitions of the two methods: Function prototype: array split (string $ pattern, string $ string [, int $ limit]) Function prototype: array explode (string $ separator, string $ string [, int $ limit]) There is

But how can we traverse the binary tree array produced by this method? My practice is as follows: Copy codeThe Code is as follows: Function preTree ($ cat ){ Foreach ($ cat as $ c ){ ?> "> : "> : If (isset ($ s ['childrens']) {?>

Copy codeThe Code is as follows: $ A = 3; $ B = 6; If ($ a = 5 | $ B = 7 ){ $ A ++; $ B ++; } Var_dump ($ a, $ B ); Trap 1 Consider $ a = 5 and $ B = 7 as $ a = 5 and $ B = 7.Error result: 3, 6 Trap 2 Operator priority. $ a = 5 is assigned

Obviously, file_exists is affected by asp, because asp not only has fileExists but also folderExists and driverExists. What does file_exists in PHP mean? File_exists = is_dir + is_file in PHP It can determine whether a file exists and whether a

Click here to download the source file Copy codeThe Code is as follows: function Pinyin ($ _ String, $ _ Code = 'gb2312 ') { $ _ DataKey = "a | ai | an | ang | ao | ba | bai | ban | bang | bao | bei | ben | beng | bi | bian | biao | bie | bin |

Environment: PHP 5.2.14 CentOS 5.5 Step 1: Create an extension skeleton Cd php-5.2.14/ext./Ext_skel-extname = laiwenhui Step 2: Modify compilation Parameters Cd php-5.2.14/ext/laiwenhuiVi config. m4 Remove PHP_ARG_ENABLE (laiwenhui, whether to

Recently, I was working on a project and encountered an AJAX Chinese garbled problem. After an afternoon of hard work, I finally wrote down my experiences, I hope it will help those who are still stuck with this problem and have a headache. As we