Php

Discover php, include the articles, news, trends, analysis and practical advice about php on alibabacloud.com

php regular specified string content preg_match function description

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. ..

Two php interception string function

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 search csv form whether there is specified data

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 two tables merged into a new table and ordered

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 gets file extension two effective methods

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 upload a picture and make a transparent watermark

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 Scale Small graph function

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

PHP commonly used mathematical functions

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 and reads data from an Access database

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, "", "",...

How long does the PHP calculation page program execute?

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

PHP processing from MySQL to export data to XLS garbled

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 query Baidu included query code

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 ...

PHP Judge page program execution time code

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

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 traverses all the directories and files in a folder

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) {...

php takes out the timestamps for Monday and Sunday

php tutorial to remove the timestamp on Monday and Sunday can take over the following two examples of the timestamp on Monday and Sunday can see a lot of things, to keep thinking Oh, the first custom time stamp out the specified date Better, but it's more practical to take out the second one on Monday and Sunday. * / function getmonsun () {$ curtime = time (); ...

PHP converts HTML tags into legitimate HTML code programs

PHP Tutorial converts HTML tags into legitimate HTML code program function Ihtmlspecialchars ($string) {if (Is_array ($string)) {foreach ($string as $key => $ val) {$string [$key] = Ihtmlspecialchar ...

PHP output JavaScript code

PHP Tutorial output JavaScript Tutorial code echo <<<eto function Hinzu (pizza) {Neuereintrag = new option (Pizza, pizza, false, false); document.getElementById (&q ...)

PHP article content pagination and generate corresponding HTM static file instance

PHP Tutorial article content pagination and generate corresponding HTM static file instance $tmpBody = "FJKA;FJSA;         {page} batch generation divided into files and plus paging code ";     $TMPURL = ' www.jzread.com '; $tmpUrlarray = Explode ('. ') ...

PHP Judge file modification time and date function code

PHP Tutorial to determine the file modification time with the DATE function this script when the page was last revised and output as 20 minutes ago, or XX days before the date ... Or even if you don't update too much-20 weeks before the show!   File Name $last _modified = Filemtime ("file.php");   {$timediff = time ()-$last _modified; if ($ ...)

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