PHP Tutorials

Simple PHP Tutorial Calendar class Control Code Instance/* This article is mainly a PHP beginner wrote the original PHP Calendar control, you can show the current date and today is the day of the week, whether it is a leap year, can automatically select the previous year or next, the month date is the same. * * Date_default_timezone_set ("etc/gmt-8"); Class calendar{var $T = array (); var $datesOFmo ...

Small part of the previous report has also been easy to ignore the PHP developers some of the essence, in addition to some of the essence of technical methods, many nuances are also easy to ignore the program, we have summed up for you 10 things about PHP you may not know. 　　For more on PHP, Welcome to: Introduction to PHP Development Basics 1. Use the Ip2long () and LONG2IP () functions to convert an IP address into an integral type stored in a database. This approach reduced storage to close to One-fourth (15) of 15-byte rounding ...

MySQL database has 10 tens of thousands of data, using rand () to extract a random 10 records, resulting in high server CPU consumption until the crash ~ Baidu has consulted some information, and then combined with some of their own experience, the following solutions: $idlist = '; For ($i =1 $i <=20; $i + +) {if ($i ==1) {$idlist =mt_rand (3,25216);} else{$idlist = $idlist.

PHP Tutorial Anti-Injection code method filters all Get POST/* Filter all get over variable/foreach ($_get as $get _key=> $get _var) {if (Is_numeric ($get _var)) {$get [ Strtolower ($get _key)] = Get_int ($get _var); else {$get [Strtolower ($ge ...

PHP substr_replace Replacement string Specify position character/* int Mb_strlen (string $str [, String $encoding]) <?php tutorial echo substr_replace ("Hello World ", the Earth", 6); Hello Earth?> is worth mentioning, when start and length are ...

Mb_strlen and strlen Compute string length differences//strlen//int strlen (string $string) $str = ' 123456 '; echo strlen ($STR); 6 $str = ' AB CD http://www.jzread.com '/; echo strlen ($STR); $ch = ' China '; Echo Strl ...

Anti-malicious refreshing PHP Tutorial Instance code is very instance, we often in order to prevent some of the user against malicious users to refresh the following let's take a look at this example code. <?php session_start (); $k =$_get[' K ']; $t =$_get[' t ']; $allowTime = 1800;//anti-refresh Time $ip = Get_client_ip (); $allowT = MD5 ...

PHP tutorials to get a full range of URL address bar parameters multiple methods <?php//Get domain name or host address echo $_server[' http_host '. <br> "; Get page address echo $_server[' php_self ']. <br> "; Get URL parameter echo $_server["Query_st ...

PHP Tutorial Get checkbox Bulk Delete data code <form action= "? action=doing" method= "POST" > <input name= "id_dele[]" type= "checkbox" Id= "id_dele[]" value=&quo ...

PHP Tutorial Data Add, delete, query, sort detail the addition of the array (the end of the data added (not limit the number of bars) and the middle of any position to add data operations).   2~ the deletion of the array (the end of data deletion (not qualifying), as well as data deletion at any point in the middle, conditions: the middle position of the array is deleted, the following values move forward, followed by the previous position. 3~ sort operations on data (sort operations, efficiency).

PHP Tutorials use Phpexcel to generate an Excel document instance//ini_set ("Display_errors", 1);//whether to display an error message//ini_set (' include_path ', Ini_get (' Include_ Path '). ' Require_once ("./1.7.2/classes/phpexcel.php"); Require_o ...

We use three kinds of PHP tutorials to send mail instance program Oh, here are a variety of examples sent to send mail oh. if (Send_mail (' test@qq.com ', ' mail subject ', ' message content ') = = "") {echo "sent successfully!" <br> "; else{Echo sent failed! <br> "; <?php $to = ...

PHP Tutorial Bulk Delete all files and folders under directory//delete directory All files/methods One $dir = "Test";     function Defiles ($dir) {$handle =opendir ($dir); while ($file =readdi ...

PHP Tutorial Records search engine Tutorials Spider Crawl page code error_reporting (E_all & ~e_notice); $TLC _thispage = addslashes ($_server[' http_referer '].$_server[' php_self '));/* ($_server [' http_host '].$_SERVER[' PHP _self ']);($_server[' HT ...

Save the file as a "excelsample.php tutorial" in the Htdocs folder. Open the browser and enter in the Address bar: http://www.jzread.com/excelsample.php At this point, the current version of Excel will be displayed in the page, with the creation of the name Php_excel_ Test.xls the workbook and enter test in cell A1 on the worksheet Sheet1. Open workbook Php_excel_test.xls, in cell A1 ...

Alert ("Createtechbook". Split (/(? =[a-z))/) Thank you. Copy Code code is as follows: <?php tutorial $str = "Abcdefghi"; /* Preg_match_all ([a-za-z]{1}[a-z]*)? [ ^a-z]/", $str, $array); * * $array =p ...

News content Pagination Code Instance Tutorial Unction explode_content ($content, $length) {$i = 0 $k = 1; $j = 0; $wn = 0; $s = '; $e = 1; = 0; A while ($k) {$d = $content [$i]; one if ($d!== ') {1 ...

PHP file Zip compression/* Creates a compressed zip file/function create_zip ($files = Array (), $destination = ", $overwrite = False) {// If the zip file already exists and overwrite is false, return false I ...

function readable_random_string ($length = 6) {$conso =array ("B", "C", "D", "F", "G", "H", "J", "K", "L", "m&quo ...)

PHP Tutorial Date mailbox Address user name validation instance <form id= "Form1" Name= "Form1" method= "Post" action= "" > <label>name <input name= "name "Type=" ...