PHP

  /*Php uses ISO-8859-1 to process strings, that is, to process strings in a single byte. The Chinese code is a multi-byte character. When substr is used,Strlen, str_peplace, and other functions are prone to errors. Special Chinese operations must

(1) mysql_connect (host, user name, password );Returns a connection number.Note: The passwords of mysql users can change with the IP address of the user's machine.In addition, mSQL does not have a user name mechanism, so msql_connect only needs one

  $ Arr = getimagesize ("images/album_01.gif ");Echo $ arr [3];$ Strarr = explode ("", $ arr [3]);Echo $ strarr [1];?>

PHP can open Socket ports on a remote or local host. This article is a small example of using Socket: ConnectionConnect to a Usenet newsgroup server, talk to the server, and download some articles from the newsgroup.Open a socket in phpUse fsockopen

$ Message = ... A bunch of strings, such as batch HTML code, can be read.EOD;Load to $ message.$ To = "digico@123.com ";$ Mail = "hts@123.com ";$ Zhui= "I Love You"; // subject// $ Mailheaders. = "Content-Type = text/html; charset = gb2312 ";// $

/*** Convert to UNIX Timestamp*/Function gettime ($ d ){If (is_numeric ($ d ))Return $ d;Else {If (! Is_string ($ d) return 0;If (ereg (":", $ d )){$ Buf = split ("", $ d );$ Year = split ("[-/]", $ buf [0]);$ Hour = split (":", $ buf [1]);If (eregi

Php Rename and copy files$ Nname = $ nowpath. $ newfilename;If (file_exists ($ nname) |! File_exists ($ oldname )){M ($ nname. 'The target file already exists or the original file does not exist ');} Else {M (basename ($ oldname). 'rename '.

Php converts text files to csv files Php converts text files to csv filesThis class provides a quick and easy way to convert a CSV file to a fixed width. It can use SplFileObject to execute iterations so that an iteration that is very efficient only

Php fgets Function Fgets(PHP 4 and PHP 5)Fgets-get the pointer to the line slave FileDescriptionString fgets (resource $ processing [summary $ length])Get the line from file pointer.ParametersHandleThe file pointer must be valid and must point to a

For some reason, the allow_url_fopen option of php is disabled, that is, file_get_contents cannot be directly used to obtain the content of the remote web page. That is, you can use another function curl. Unlimited file_get_contents function for

  The most common way to compare the two strings is to use "=" to determine whether they are equal. As for the difference between it and "=, simply put, the former emphasizes that the "identical" type also requires the same; the latter requires

  Definition and usageMysql tutorial _ field_type() Specifies the field type in the returned result set of the function. If the operation succeeds, the type of the specified field is returned. If the operation fails, false is returned.

  Php tutorial array_multisort () function details Function bool array_multisort (array & $ arr [, mixed $ arg = SORT_ASC [, mixed $ arg = SORT_REGULAR [, mixed $...]) Parameter description: The function sorts multiple arrays or multi-dimensional

In the fourth phase of the PHP built-in Function Research Series, The parse_str function is used to parse the query string to the variable. This article mainly discusses the functions and usage of the parse_str () function. The parse_str () function

Use php and imagemagick to process upload and zoom of image filesPhp is very easy to process file uploads. However, if you want to scale the uploaded image, you can use GD,Complicated processing is required. ImageMagick is an image processing

Application InstanceThe POP3 mail receiving class has already been described in detail in the previous article. Let's take a look at how to apply this class:　　 Include ("pop3.inc. php ");$ Host = "pop.china.com ";$ User = "boss_ch ";$ Pass = "026007

If (eregi ("^ [_. 0-9a-z-] + @ ([0-9a-z] [0-9a-z-] +.) + [a-z] $", $ email )){Echo "your email has passed the preliminary check ";}?>In this sentence, an eregi function is first applied, which is quite understandable. If you look for a book, you can

Grasp pear: BenchMark. Now you know how to test your code and how to determine which part of your code is slow. Next I will talk about how to eliminate or optimize the slow code.In this regard, my main experience is only two points. One is to

Define ("tblPath ",".");Define ("exten", ". php ");Define ("fileHead", " This file only for class txtTbl ");Class txtTbl {Var $ innerName = ""; // Database NameVar $ innerCount; // number of database recordsVar $ innerFields; // database Field List

Php tutorial File Download instance codeFunction xiazai ($ file_dir, $ file_name)// Parameter description:// File_dir: directory of the file// File_name: File Name{$ File_dir = chop ($ file_dir); // remove unnecessary spaces in the path// Obtain the