php tutorial to get the native mac address three ways getmacaddr {var $ return_array = array (); / / return string array with mac address var $ mac_addr; ...
php tutorial to obtain the client ip address This tutorial provides several code to obtain the ip address, each has its own advantages, users get ip is the use of global variables php to achieve, the following to see if you are looking for. * // // The easiest way $ ip = $ _server ["remote_addr"]; Echo $ ip; / / The most practical access to the user ip address code function get_real_ip () {& nbsp;
We will use the regular replacement function preg_replace, the following example is the text has a The following tag <img style src = "<? = $ Url?> / Images / styleno.jpg" width = "30" height = "30 & ...
recursive delete directory (folder) Here are two examples, one is to delete a separate empty directory code, a batch delete directory folder code. // delete a single empty folder $ dir = 'www.111cn.net'; if (is_dir ($ dir)) / / to determine whether the directory {if (rmdir ($ dir)) {echo 'directory delete success'; el ...
delete the data value of this paragraph is to delete a data code is based on a user url address bar passed parameters, go to the mysql database to delete the operation of the tutorial Oh. / $ host = 'localhost' ; $ user_name = 'root'; $ password = 'admin'; $ conn = mysql_connect ($ host, $ user_name, $ password); ...
This is a use mysql php instance user registration code, is relatively simple, is to submit the html data submitted to the mysql database tutorial. * / include ('global.php'); if ($ _ post ['sub']) {$ user = $ _post ['username']; $ pwd = md5 ($ _ post ['p ...
This is a relatively full mysql operation Oh, yesterday wrote a simple link mysql database code, relative to this, that is the easiest, this is a data query, update, delete, and other operations . * / class mysql {private $ db_host; // database host private $ db_user; / / database user name private $ db_p ...
<! doctype html public "- // w3c // dtd xhtml 1.0 transitional // en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd"> <html xmlns = "http : //www.w3.org/1999/xhtml ...
php tutorial to read the contents of the text file Reading the file in the php language many ways, today we talk about three examples of php read text file content, it is mainly used fopen, file, file_get_contents function to achieve. * / / fopen read the file instance $ path = 'a.txt'; $ fp = fopen ($ file, "r"); // Open the file while (! (feof ($ fp) ) {& n ...
This is a PHP string truncation function Oh, this is a Chinese string support oh, it can intercept html and Chinese and Western mixed content, and the html tag is not Count in the character interception, if the html tag is not closed, the program will automatically filter extra tags. * / function mysubstr ($ str, $ length) {$ ...
/ / php delete all the files in the directory and directory subdirectory / * This function is a recursive step by step to delete the directory with the current directory of all subdirectories Oh, no matter the directory is not empty can be deleted, * / set_time_limit (0); $ filenum = 0; function deldir ($ dir) {global $ filenum; $ dh = opendir ($ dir); while ($ file = ...
The first paragraph is a get url without parameters The second paragraph is to get the complete url function Oh, if you are looking for url parameter code Oh. <? php // Description: Get no parameters url function curpageurl () {$ pageurl = 'http'; if ($ _server ["https tutorial"] == & q ...
php tutorial to determine whether the remote image exists function img_exits ($ url) {$ ch = curl_init (); curl_setopt ($ ch, curlopt_url, $ url); curl_setopt ($ ch, curlopt_nobody, 1);
php tutorial file upload program (two simple file upload program) / * These two file upload program is very simple, it is suitable for beginners to learn php file upload example tutorial Oh. * / if (! $ uploadaction):?> <html> <head> <title> File upload interface </ title> </ head> <body> <table> ...
<html> <head> <title> php tutorial to write the page counter code </ title> <head> <body> <? php $ countfile = "counter.txt"; / / Define the counter to write the file is the current directory Counter.txt file, and then we should test whether the file can be opened i ...
excellfileparser Excel into the database tutorial Oh. <! doctype html public "- // w3c // dtd xhtml 1.0 transitional // en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd"> <html xmlns = & q. ..
php tutorial delete array elements and delete duplicate array function This article is mainly about the deletion of the php array value Oh, tell you how to delete an array of elements at the specified location, the two tell you to use the array_keys function to delete the array of duplicate elements. * / $ a = array ("red", "green", "blue", "yellow"); ...
PHP Tutorial Traversing two-dimensional array and multi-dimensional array code On the PHP array, let's talk about two-dimensional array and multi-dimensional traversal code, the following three examples to test the array traversal PHP code function. * / function arr_foreach ($ arr) {if (! is_array ($ arr)) {return false;} foreach ($ arr as $ key = & ...
php tutorial mysql tutorial Export csv excel format file and save This is a paragraph I used in my own time to use a php export mysql database tutorial save the data into a csv file and provide download, the principle is very simple to mysql data found out, Then save it to a .csv file in csv format so that's ok. * / $ times = time (); $ filename = $ times. ". csv"; & nbsp; ...
php tutorial Get upload file type Get file suffix This tutorial provides three ways to get upload files and image types, the method is very simple The first two types is defined first, and then in_array judgment, the last step is to use fopen read the first two bytes, determine. * / / Get the picture format, including jpg, png, gif function get_type ($ img_name) / / Get image file type {if (preg_match (& quo ...
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