rand function rol dicer game
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$rand = rand();
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echo '<h2> .' $rand '. </h2>'
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some random numbr
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$max =getrandmax();
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1234567890
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echo $max;
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2147483647
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<?php
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The isset()
function checks whether a variable is set, which means that it has to be
declared and is not NULL.
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if (isset($_POST['roll'])) {
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whenever roll name is post, if it is post means it is true,
isset of true, it go to next statmentent
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$rand = rand();
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some value will go to random variable
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echo '<h2> you got: '. $rand .'</h2>';
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it will print that value
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}
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This function
returns true if the variable exists and is not NULL, otherwise it returns
false.
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?>
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<form action = "index.php"
method="POST">
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method post, whenever u click submit button, that name post or
sent to index.php, that name script will execute
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<input type="submit" name="roll"
value="Roll dice">
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</form>
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$rand = rand(1, 10);
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it will give from 1 to 10
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server variables - predeffined variables
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index.php
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echo $_SERVER['SCRIPT_NAME'];
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$_SERVER - IS a variable which can print the file name by calll
script_name
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forminc.php
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<form action="index.php"
method="post">
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<input type="submit" name="submit"
value="submit">
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whenever u submit , it will post that name to index page
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</form>
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page1
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<?php
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include <forminc.php':
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without writing the whole code, u can include that. It wil
automatically display forminc code, whenever u clik on submit, it page
redirects to index page
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?>
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page2
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<?php
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include <forminc.php':
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?>
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 |
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index.php
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<?php
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include 'forminc.php';
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if (isset($_POST['submit'])){
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echo 'clicked on index page';
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if u submit from any page it print same data, clicked on index
page
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}
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?>
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I want page name print on what they have
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forminc.php
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<?php
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$sName = $_SERVER['SCRIPT_NAME'];
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?>
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defailt template
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<form action="<? Php echo $sName ?>"
method="post">
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whenever u click , on submit, it will post to same page , in
that it will print that php script after the submit button
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<input type="submit" name="submit"
value="submit">
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it will not redirects and
it will redirects to same page
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</form>
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page1
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<?php
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if u clicked on page 1, it will print click on page1, previously
itwill redirect ot index , but it will not because we given actiion is this
page url, so it will redirects and post to that page only
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include <forminc.php':
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?>
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page2
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<?php
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include <forminc.php':
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?>
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echo $_SERVER['HTTP_HOST'];
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PRINT THE DOMAIN NAME OR LOCAL HOST
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Create a confic.php
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<?php
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$host = $_SERVER['HTTP_HOST'];
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$images = 'http://'.$host.'/telugucomputerword/images/';
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in host it will print server name
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?>
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index.php
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<h1> index page <?h1>
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<?php
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require 'confinc.php';
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call that confinc file to use some variable
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echo <img src=" '.$images. 'sweety.jpg" />';
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it prints image using indirect method
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?>
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| rand |
| getrandmax() |
| isset |
| rand(1,10) |
| $_SERVER |
| forminc.ph |
| template |
| form page |
| include |
| include |
| include |
| isset |
| $_SERVER['SCRIPT_NAME']; |
| action is same page url |
| templat used |
| include |
| $_SERVER['HTTP_HOST']; |
| $_SERVER['HTTP_HOST']; |
| require |
| concatenate image url |
| how to print any random number | ||||||||||||||||||||||||||||||||||||||||||||||||
| how to print the maximum random number | ||||||||||||||||||||||||||||||||||||||||||||||||
| how to execute if it is true | ||||||||||||||||||||||||||||||||||||||||||||||||
| how to submit to some php page with some name | ||||||||||||||||||||||||||||||||||||||||||||||||
| how to print the page file name | ||||||||||||||||||||||||||||||||||||||||||||||||
| what post does and if action is some page url, will it redirects to that page | ||||||||||||||||||||||||||||||||||||||||||||||||
| is it take name value to cross check in server after submit? | ||||||||||||||||||||||||||||||||||||||||||||||||
| what happened after submit | ||||||||||||||||||||||||||||||||||||||||||||||||
| what is maeant by template | ||||||||||||||||||||||||||||||||||||||||||||||||
| will we use other page script without writing total | ||||||||||||||||||||||||||||||||||||||||||||||||
| save time code | ||||||||||||||||||||||||||||||||||||||||||||||||
| is it change in all page if we change in a one page | ||||||||||||||||||||||||||||||||||||||||||||||||
| isset , what Is it means, is it execute whenerver argument output is true | ||||||||||||||||||||||||||||||||||||||||||||||||
| whwnever argument Is true, it wil go to inside | ||||||||||||||||||||||||||||||||||||||||||||||||
| how can we print thepage name | ||||||||||||||||||||||||||||||||||||||||||||||||
| canwe write script in action instead direct url | ||||||||||||||||||||||||||||||||||||||||||||||||
| what happen if we click on submit button, | ||||||||||||||||||||||||||||||||||||||||||||||||
| wil it print the data in template after refresh | ||||||||||||||||||||||||||||||||||||||||||||||||
| wil it print same page name | ||||||||||||||||||||||||||||||||||||||||||||||||
| how can we print the host name | ||||||||||||||||||||||||||||||||||||||||||||||||
| $ means it is called predefined variables in server terms | ||||||||||||||||||||||||||||||||||||||||||||||||
| how to create a temple which can be used in so many pages without writing total code | ||||||||||||||||||||||||||||||||||||||||||||||||
| how can I print the iamge without writing total image url | ||||||||||||||||||||||||||||||||||||||||||||||||
| how to some output fromtemplate | ||||||||||||||||||||||||||||||||||||||||||||||||
| how to use some output from another php page,using this how to printthe image | ||||||||||||||||||||||||||||||||||||||||||||||||
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