PHP

The Tests Directory of the development kit has detailed usage examples. it supports Chinese characters. pay attention to file encoding and save the file as UTF-8. Official PHPExcel website: http://phpexcel.codeplex.com/ PHPExcel On GitHub:

Cosine similarity implementation php Data analysis PHP implementation $ Val) {$ in = $ index. $ key; $ arrBack [$ in] = $ val;} return $ arrBack;}/***** @ param unknown_type $ arrMark benchmarking vector array (the index has been processed) * @

Php calculates the difference between two dates. in the PHP program, the processing time is often incorrect. for example, it determines how long the user has been online and how many days have the user logged on to the system, the time difference

Some ideas raised by the phpin_array function today I suddenly thought that the in_array function in php has a strange usage. let's take a look at this usage. a friend in need can give a simple reference. the code is as follows: $ A = array ("1, 2

In the phpstr_replace input box, press enter to replace the br. when we use textarea, we will find that the carriage return and space are invisible. Therefore, we can use the str_replace function to replace \ n in php with br, for more information,

Php intercepts strings of a certain length Function ssubstr ($ string, $ length, $ dot = '... ') {global $ charset; if (strlen ($ string) '), array ('&', '"', ''), $ string); $ strcut = ''; if (strtolower ($ charset) = 'utf-8') {$ n = $ tn = $ noc =

Definitions and usage of common php functions: abs () returns the absolute value of a number. Syntax: abs (x). The code is as follows: $ Abs = abs (-3.2); // $ abs = 3.2 $ Abs2 = abs (5); // $ abs2 = 5 $ Abs3 = abs (-5); // $ abs3 = 5 Definition

The php case-sensitive letter function provides a php case-sensitive letter function for simple instances. it is a convenient and common function to find the number of uppercase letters and lowercase letters in a string, the code is as follows:

The substr_compare () function, a common string comparison function in php, compares two strings starting from the specified length. This function returns: 0-if the two strings are equal, 0-if string1 (starting position) is greater than

Php array lookup key functions provide three methods to determine whether a string contains the words we have defined. this is more suitable for keyword filtering in the message, comment, and other addresses. the instance code is as follows: $ Crud

The phpaddslashessql anti-injection function addslashes can automatically enclose the single quotation marks and add \\\\\\ to the double quotation marks. This way, we can securely store the data into the database without the use of hackers,

Php environment installation error solved: configure: error: libevent> = 1.4.11 cocould not be found Solution: yum-y install libevent-devel Error: configure: error: xml2-config not found. Please check your libxml2 installation. Fix: yum-y

Php determines whether a class has a function class_exists. if we want to determine whether a class is usable, we can use the class_exists function to determine whether a class can be used. The following are several examples. Bool class_exists

Phpftp function files are not used for uploading php ftp function files. However, when using advanced WEB applications, ftp functions are used, for example, if I want to transfer the uploaded image to server B and save the data to server A, the

Escapeunescape in php */Function phpescape ($ str) {$ sublen = strlen ($ str); $ restring = ""; for ($ I = 0; $ I = 127) {$ tmps tutorial tring = bin2hex (iconv ("UTF-8", "UCS-2 ", substr ($ str, $ I, 2); if (! Eregi ("win", php_ OS) {$ tmpstring =

Php imitates the user's webpage access code function httpget( $url, $followredirects=true ) { global $final_url; $url_parsed = parse_url($url); if ( emptyempty($url_parsed['scheme']) ) { $url_parsed = parse_url('http://'.$url); }

Digital currency type verification function in php function is_number( $str ) { if ( substr( $str, 0, 1 ) == "-" ) { $str = substr( $str, 1 ); } $length = strlen( $str ); $i = 0;

Php remote image collection Description of variables: $ url is the complete url address of the remote image. it cannot be blank. $ filename is an optional variable. if it is empty, the local file name is based on the time and date. automatically

Php obtains the client's browser and operating system types Function browse_infor () { $ Browser = ""; $ browserver = ""; // $ Browsers = array ("lynx", "mosaic", "aol", "opera", "java", "macweb", "webexplorer", "omniweb "); $ Agent = $ globals

Phpsubstr Chinese garbled solution if substr is directly used to intercept Chinese strings, it will certainly produce garbled characters, because it will divide a Chinese character into half. why is it like this? due to internal machine encoding