PHP Tutorials

What the class has to share with you today is how to learn the underlying workings and principles of PHP, a dynamic language for web development. Specifically, it is a software framework that implements a large number of components in the C language.

$handle = @ fopen ("Demo.txt", "R"); if ($handle) { while ($buffer = Fgets ($handle, 4096))!== false) { Echo $buffer; } if (! feof ($handle)) { echo "error:unexpected fgets () fail\n"; } Fclose

By using this code snippet, you can easily extract all the links on any Web page. $html = file_get_contents (' http://www.example.com '); $dom = new DOMDocument (); @ $dom->loadhtml ($html); Grab all the

A very simple function to generate a. csv file from a PHP array. This function uses the Fputcsv PHP built-in function to generate a comma-delimited file (. CSV). The function has 3 parameters: data, delimiters, and CSV enclosure, which are double

The implementation principle first calculates the four points of the rectangle around the point, and then uses latitude and longitude to directly match the records in the database. Get surrounding coordinates Public Function

Header ("Content-type:image/png"); $num = $_get[' num ']; $imagewidth = 60; $imageheight = 18; Srand (Microtime () * 100000); $numimage = Imagecreate ($imagewidth, $imageheight); Imagecolorallocate ($numimage, 183,

$f _open = fopen ("Count.txt", "r+"); Opens the specified file $count = fgets ($f _open); Reading data from a file if (Empty ($_cookie[' cookie_name ')) {//To determine if a COOKIE exists Setcookie ("Cookie_name", Value,time () +180

$query = "SELECT count (IP) as count_ip from tb_count04"; Querying the total number of IP accesses in the database $result =mysql_query ($query); $countes =mysql_result ($result, 0, ' count_ip '); Creating a canvas

$int = 36; $str =array (); $flag = 0; Echo chr ($int%36+87); while ($int!=0) { if ($int%36 else $str [$flag ++]=chr ($int%36+87); $int/=36; } for ($i = $flag; $i >=0; $i-=1) if ($str [$i]!=0

error_reporting (0);//Close error Report Include_once ("simple_html_dom.php");//introduction of analytic libraries $url = ' http://www.w3cschool.cc/mongodb/mongodb-window-install.html '; $html =file_get_html ($url); while

/* 1. Generate Random Numbers 2. Inserting a table 3. Enquiry 4. Return Yes */ function mak ()//Generate card number cipher algorithm can be replaced; { $str =md5 (Microtime ()); $pass =substr ($STR,-12);

The PHP form submits the page check box after the name to add [], so that the receiving page to get the correct results. The form is submitted with an array, and then the specific Vaule value of the form is obtained by accessing the array elements.

function compress_html ($string) { $string = Str_replace ("\ r \ n", ", $string); Clear line break $string = Str_replace ("\ n", "", $string); Clear line break $string = Str_replace ("\ T", "', $string); Clear tabs $pattern =

function Getfirstchar ($s 0) { $fchar = Ord (substr ($s 0, 0, 1)); if ($fchar >= ord ("a") and $fchar = ord ("a") and $fchar $s = Iconv ("UTF-8", "gb2312", $s 0); $ASC = Ord ($s {0}) * n + ord ($s Beckham)-65536; if ($asc >=

function Show_page ($count, $page, $page _size) { $page _count = ceil ($count/$page _size); Calculate the total number of pages $init = 1; $page _len=7; $max _p= $page _count; $pages = $page _count; Judging the

Handling code: Header (' Content-type:text/html;charset=utf-8 '); Ready to receive /* echo ' filename: '. $_files[' userfile ' [' name ']; echo ' File size: '. $_files[' userfile ' [' Size ']; Echo ' ERROR:

function My_image_resize ($src _file, $dst _file, $new _width, $new _height) { $src _img=imagecreatefromjpeg ($src _file); $w =imagesx ($src _img); $h =imagesy ($src _img); $ratio _w=1.0 * $new _width/$w; $ratio _h=1.0 *

function random_readable_pwd ($length =10) { The wordlist from which the password gets generated (change them as) $words = ' Dog,cat,sheep,sun,sky,red,ball,happy,ice, '; $words. = ' Green,blue,music,movies,radio,green,turbo,

Sometimes in order to adjust the interface periodically, the program needs to run automatically. There are two ways to do this from the Internet: 1, Ignore_user_abort () Ignore_user_abort () functions with Set_time_limit (0) and sleep ($interval)

function Randomcolor () { $str = ' # '; for ($i = 0; $i $randNum = rand (0, 15); Switch ($randNum) { Case: $randNum = ' A '; Break Case one: $randNum = ' B '; Break Case: $randNum = ' C '; Break Case: