Php

PHP Unlimited level Create directory several functions function mkdirs ($dir) {if (!is_dir ($dir)) {if (!mkdirs (DirName ($dir))) {return false;}  if (!mkdir ($dir, 0777)) {return false;} &nbs ...

Oh, the following code is a little messy ah, is what I do in the test, PHP mysql date calculation code [DATEDIFF] is also the day I need to try it. Here's a look at Code function A ($d) {$Date _1=date ("y-m-d"); $Date _2= $d;   $Date _list_a1=explode ("-", $Date _1); $Date _l ...

PHP Get file size function and instance tutorial <?php function GetFileSize ($url) {$url = Parse_url ($url); if ($fp = @fsockopen ($url [' Host '],empty ($ url[' Port ']: $url [' Port '], $error)] {fputs ($fp, "get". Empty ($ ...)

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 tutorial Regularly specify the string content Preg_match function description Although the code is small, but the code is as follows: preg_match ('/ ^ (?! string) /', 'aa') === true This is used to verify a Whether a string begins with a 'string' or not, in a perl or perl-supported regular expression language such as php, can be done with a look-ahead declaration, as the regular expression is: preg_mat. ..

Provide two php tutorial interception string function, they can automatically identify the Chinese Oh, if you are intercepting the article this is very good, like to come in and see it. <? php header ("content-type: text / html; charset = utf-8"); function strcut ($ string, $ length, $ dot = '...', $ chars ...

php tutorials search csv form there is no specified data // search cessory csv data principle is to open the csv file, and then search for the specified line by line contains whether we read the code, if it is true. // Search for the contents of csv $ fh = @fopen ("csv_file_name", "r"); if ($ fh) {if (flock ($ fh, lock_ex) ...

PHP tutorial The two tables are merged into a new table and ordered <?php/** LA (3,5,8,11) lb (2,6,8,9,11,15) is merged into LC, arranged in order. With PHP, you can't use functions like sort!!!!     **/class Union {var $lista = array (); var $listb = array ...

PHP Tutorial Get file Extension Two effective methods $upload _name = ' Www.jzread.com.rar ';    $attach _ext = Strtolower (substr (STRRCHR ($upload _name, '. '), 1)); Echo $attach _ext;//method Two $extarray = Explode ('. ',...

PHP Tutorial upload pictures and a transparent watermark to the picture $im = Imagecreatefromjpeg ($_file["Upload"] ["tmp_name"]); You want to fetch water. Example of the picture $watermark = Imagecreatefrompng ("Smiley.png"); The path $im _x = Imagesx ($im) of the watermark map; ...

PHP Tutorial Scaling Small graph function <?php class My_lib_functions {# ******************************************** # object to array # ************** function Object2array ($obj) {&nb ...

The math functions commonly used in the php tutorial The tanh () function returns the hyperbolic tangent. Syntax tanh (x) Parameter Description x Required. A few. Description Returns the hyperbolic tangent of x, defined as sinh (arg) / cosh (arg). * / echo tanh (-m_pi); / / output -0.996272076221 echo & quo ...

PHP connects to access with an ODBC-related function. The code for the connection is as follows: <?php $connstr = "Driver=microsoft Access DRIVER (*.mdb);D bq=". Realpath ("Mydb.mdb"); $connid =odbc_connect ($connstr, "", "",...

PHP Tutorial calculates how long the page executes the Code function test () {list ($a, $b) = Explode ("", Microtim ...)

PHP Tutorial Excel class from the MySQL tutorial to export data to XLS garbled $objPHPExcel->setactivesheetindex (0)->setcellvalue (' A1 ', iconv (' GBK ', '   Utf-8 ', ' Chinese Hello ')->setcellvalue (' B2 ', ' world! ') ->setcell ...

PHP to provide PHP queries written query code download Oh, look at it very easy oh.  function Baidu () {global $murl, $furl;  $url = "Http://www.baidu.com/s?wd=site: $furl";  $page = file_get_contents ($url); $Page ...

The PHP tutorial determines the page execution time code to determine the time required for the PHP script to execute correctly for a microsecond.         Inserts the code at the top of the page: <?php $mtime = Microtime (); &nbs ...

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 ...

Php_sapi_http://www.aliyun.com/zixun/aggregation/11696.html ">name (PHP4 >= 4.0.1) php_sapi_name--- Returns the interface syntax between Web servo and PHP: String php_sapi_name (void) Description: Php_sapi_name () returns a lowercase ...

We often encounter this problem in the interview: PHP Traverse all the files and subfolders under a folder. There are many solutions to this problem. But the general idea is the same. Recursive. $ path = './filepath'; function getfiles ($ path) {...