Passing Values

rage2021

Ok so im using PHP 5, seems like older versions use different terms so hopefully theres people out there who use 5. Anyways I'm having basic trouble of passing values to a page.I want to use one page. For example

<html>
<head>
<title>pass</title>
</head>
<body>
<form method="POST">
<?
global $guess;

print "The guess is $guess";
print <<<HERE
Enter number: <input type ="text" name="$guess"></input><p>
<input type="submit" value="Click"></input>

HERE;

?>
</form>
</body>
</html>

It doesn't work. I want it so when you type in a number in the textbox it prints out that number when you click submit. Any ideas? Thanks

devinemke

<?php
if (!isset($_POST['submit']))
{
	echo '
	<form action="" method="POST">
	enter number: <input type="text" name="guess"><br>
	<input type="submit" name="submit" value="submit">
	</form>
	';
}
else
{
	echo 'you entered ' . $_POST['guess'];
}
?>

rage2021

can u explain
if (!isset($_POST['submit']))

i am using PHP 5 btw, is this code the older version?

Vbabiy

if (!isset($_POST['submit']))

this statment will check if the Form has been submited.

It will return a boolean value.

devinemke

it means:

if the array index $_POST['submit'] is not set
{
do what is here in these brackets
}

this will work in any version of PHP >= 4.1.0

rage2021

hmm im wondering if theres a simpler way cuz im reading ma php book and it doesnt use any code like that. I trying to stick to the PHP 5 code.

jansky

this is another way

@$_POST['yourvariable'];

the '@' means same as isset or not empty

LoganK

rage2021 wrote:
hmm im wondering if theres a simpler way cuz im reading ma php book and.... I trying to stick to the PHP 5 code.

That's perfectly valid PHP5 code.

rage2021 wrote:
it doesnt use any code like that.

Why don't you use the code it uses?

laserlight

hmm im wondering if theres a simpler way cuz im reading ma php book and it doesnt use any code like that.

hmm... then your book isnt teaching standard techniques, you might want to consider other books, such as one written by certain members of this community.

the '@' means same as isset or not empty

It doesnt - @, the error control operator, suppresses reports of errors, if any.

rage2021

well for example it uses echo instead of print, i much prefer, PRINT <<<HERE ...HERE;

LoganK

The heredoc (<<<) is only good for outputting multiple lines of text. Something like:

print <<<END;
Hello!
END;

Makes no sense to use the heredoc. A echo "Hello!"; echo("Hello!"); print("Hello!"); or print "Hello!"; would work much better.

rage2021

well i find it easier cuz then u can combine text+html, just easier for me I guess, but I agree its useless for 1 or 2 lines.

LoganK

"u can combine text+html"

echo "This is text, and <b>this is html</b>";

rage2021

IN multiple Lines? Print <<<HERE

HERE;

also since im use to java its easier to port from system.out to print, insted of to echo..

LoganK

print "this is text
<br>
multiple lines
<b>html</b>
";

This really is a moot point; let's not argue any further 😃