Php Tutorial

php tutorial $ http_cookie_vars Example Voting limit if ($ http_cookie_vars ["vote"]) {echo "<script> alert ('You have voted, please do not repeat the vote'); history.back (); </ script > "; exit;} $ vcount = $ _ pos ...

PHP tutorial excludes weekend and holiday program instance Code date_default_timezone_set (' PRC '); /** * The date after a certain number of days from a date, * excluding Saturday Sundays and holidays * @param $start start date * @param $offset ...

? PHP Tutorial The easiest way to get an array of the last element-free value/method A $url = ' www.jzread.com.cc '; $TMPURL = Explode ('. ', $url);//output Temurl see Print_r ($TMPURL); /* Result: Array ([0] => www [1] => 11 ...

php tutorial to filter illegal character function $ str = "<a> fdafsa '' & # x </a>"; echo htmlspecialchars ($ str); / * & (and) into & amp; ; <(Less than) turn into <> (greater than) turn into & g ...

/php tutorial All pages are referred to as a domain name 301 permanent to the Code $SN = strtolower ($_server[' server_name ']?$_server[' server_name ']:$_server[', ' http_host ') ); $query = Trim (@$_server[' Request_uri ')); $SN = Str_replace (' http://', ', ', strtolowe ...)

PHP Tutorial Traversal Object Properties Two methods * * This article we want to provide you with two kinds of traversal object property methods, and illustrate the traversal object properties in PHP application.     * * class Foo {private $a;     public $b = 1;     Public $c; P ...

A specific overview of the str_replace () function in php str_replace ($ search, $ replace, $ subject) Example 1 str_replace ("n", "", '465s4d6f5s4ad1as65d4fa6sn54df65sdafgsdfn65g4sd65g4hdf6n54ghd6fbghdfgh'); ...

This article describes PHP empty string html tags Tag: HTML, HTML, HTML Category: html function clear_html_label ($ html) {$ search = array ("'<script [^>] *?>. *? </ script & g ...

mktime = mktime ($ hours, minute, seconds, month, day, years) $ start_time = mktime (0,0,0,01,09,2010); // start time $ end_time & n ...

This tutorial is a use php regular expressions to filter non-site link instance. * / php $ neirong = preg_replace ("/ <a (?! [^ <>] *? [^ <>] *?>). *? </a> / si", "", $ bbb); echo $ neirong; Method two $ str = '& ...

The date / time function allows you to extract and format the date and time on the server The mktime () function returns a unix time stamp of the date. The parameter always represents the gmt date, so is_dst has no effect on the result. Arguments can be left blank from right to left, and empty parameters set to the corresponding current gmt value. Syntax mktime (hour, minute, second, month, day, y ...

Can customize what kind of string and how long [PHP] Code function random ($ length) {$ hash = ''; $ chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz'; $ max = strlen ($ chars) - 1; mt_s ...

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 & ...

max () returns the maximum value. Syntax max (x, y) Parameter Description x Required. A few. y necessary. A few. Description max () Returns the value with the highest value in the argument. If there is only one parameter and an array, max () returns the largest value in the array. If the first argument is an integer, string, or floating point number, at least two arguments are required and max () returns the largest of these values. You can compare an unlimited number of values. echo max (1,3,5,6,7); & ...

mt_rand () Returns a random integer using the mersenne twister algorithm. Syntax mt_rand (min, max) Description mt_rand () returns a pseudo-random number from 0 to rand_max if the optional parameters min and max are not provided. For example, want a random number between 5 and 15 (including 5 and 15), using mt_rand (5, 15). * / echo mt_rand (); & nb ...

* / // Create an image $ image = imagecreatetruecolor (300,300); // Define the color you want to draw the pie chart $ white = imagecolorallocate $ image = 0x0 0xff 0xff $ gray = imagecolorallocate $ image 0xc0, 0xc0, 0xc0); $ darkgray = imagecolorallocate (...

fread (resource $ handle, int $ length) The length of the byte read by fread () is handled by the file pointer of the reference. Read as soon as possible to one of the following conditions: The length of the bytes that have been read! Eof (end of file) Reaches a packet of available network (stream) has been read 8192 bytes (open user space stream) * / // fread read File instance one ...

Generate a random string, including uppercase and lowercase letters and numbers. Function randstr ($ length) {$ hash = ''; $ chars = 'abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz'; $ max = strlen ($ chars) - 1; mt _...

str = People's Republic of China 123456789abcdefg; Echo preg_match ("/ ^ [u4e00-u9fa5_a-zA-Z0-9] {3,15}", strName); Run this code above to see what tips? Warning: preg_match (): Compilation failed: PCRE does not support L, l, ...

Single quote within the variable does not execute double quotes will be executed, such as $ name = 'hello'; Echo "the $ name"; Will output the hello And if the single quotation marks $ name = 'hello'; echo 'the $ name' The main difference that will output the $ name is this.