Page 1 of 1
Help with variable
Posted: Wed May 03, 2006 12:06 pm
by mfbrowne
feyd | Please use Code: Select all
and [syntax="..."] tags where appropriate when posting code. Your post has been edited to reflect how we'd like it posted. Please read: [url=http://forums.devnetwork.net/viewtopic.php?t=21171]Posting Code in the Forums[/url] to learn how to do it too.[/color]
Being a new user of PHP I am just playing around and testing some stuff, so I appologize if my problems seem trivial.
In the code below I am trying to assign a Variable called $Test and then have the contents of the variable be placed on the Submit Button. I have tried many different variations and can't seem to get it to work as I always get $Test as the text on the button. Could someone explain to me the proper way to accomplish having the contents of the variable show on the button. I would appreciate if someone could modify the code below to show me how it is done.
Thanks very much for any information.
Code: Select all
<?php
$Test = "Submit Info" ;
echo '
<form name="Form1" form method="POST" form action="test.php" >
<input type="text" name="lname" size="30"> <font face="Arial" size="4">Last Name</font>
<input type="text" name="fName" size="30"> <font face="Arial" size="4">First Name</font>
<<input type="submit" value= "$Test" >
';
?>
feyd | Please use Code: Select all
and [syntax="..."] tags where appropriate when posting code. Your post has been edited to reflect how we'd like it posted. Please read: [url=http://forums.devnetwork.net/viewtopic.php?t=21171]Posting Code in the Forums[/url] to learn how to do it too.[/color]
Posted: Wed May 03, 2006 12:10 pm
by feyd
Single quote strings do not parse variable references contained in them, only double quote strings do that.
http://php.net/language.types.string for more information and examples.
Posted: Wed May 03, 2006 12:24 pm
by mfbrowne
Oh, I see. Well it now works. Thanks for the quick information, I appreciate it.
Posted: Wed May 03, 2006 4:17 pm
by mfbrowne
feyd | Please use Code: Select all
and [syntax="..."] tags where appropriate when posting code. Your post has been edited to reflect how we'd like it posted. Please read: [url=http://forums.devnetwork.net/viewtopic.php?t=21171]Posting Code in the Forums[/url] to learn how to do it too.[/color]
I am trying to just expand on my testing a bit and it seems I am lost again.
In the following if I don't fill anything in the form and click the submit button then the page refreshes but I don't see and error message.
Am I correct in thinking the first time through the form the isset should be false, then if I leave the form blank press the submit button and the form refreshes I should see a red error message on the display because the isset should be true.
I can see this is going to be a long education at this rate.
Thanks for any help.
Code: Select all
<?php
$Test = "Submit Info" ;
if(isset($submit_button)){
$error_msg='';
if(trim(form.lname)=='' ) {
$error_msg.="Please enter your Last Name<br>";
}
if($error_msg==''){
// other process here
} else {
echo "<font color=red>$error_msg</font>";
}
}
echo "
<form name='Form1' form method='POST' form action='test.php' >
<div align='left' style='width: 424; height: 250'><p>
<input type='text' name='lname' size='30'> <font face='Arial' size='4'>Last Name</font>
<input type='text' name='fName' size='30'> <font face='Arial' size='4'>First Name</font>
<div align='left'><p>
<input type='submit' value= \"$Test\" name='submit_button'>
?>
feyd | Please use Code: Select all
and [syntax="..."] tags where appropriate when posting code. Your post has been edited to reflect how we'd like it posted. Please read: [url=http://forums.devnetwork.net/viewtopic.php?t=21171]Posting Code in the Forums[/url] to learn how to do it too.[/color]
Posted: Wed May 03, 2006 4:49 pm
by feyd
the data will be in $_POST
Posted: Wed May 03, 2006 8:59 pm
by mfbrowne
feyd | Please use Code: Select all
and [syntax="..."] tags where appropriate when posting code. Your post has been edited to reflect how we'd like it posted. Please read: [url=http://forums.devnetwork.net/viewtopic.php?t=21171]Posting Code in the Forums[/url] to learn how to do it too.[/color]
Wel I am totally confused now. So I changed my little test php to relect the information being received from here. Now I have a problem that is really throwing me for a loop.
So in my first test I named the submit button as submit_button and I have changed it to a new value of just 'submit'. Ok, so I figure all should be good and things should start to work. I replaced the php file and tested again.
Well if I look at the source of what the browser is receiving it is still getting the submit_button name and not the submit name. If I hit the submit button showing on the screen without filling any data into the fields then the new version shows upin the browser. Then if I hit the submit button again the script works.
So my confusion is why is the browser still getting the first version and how to I make sure the most current version is always used.
I appologize for these trivial questions and problems and I am sure once I get over this darn hump on basic understanding then I should be better, but for right now I am really confused.
Thanks
Code: Select all
<?php
$Test = "Submit Info" ;
if(isset($_POST['submit'])){
$error_msg='';
if(trim($_POST['lname'])=='' ) {
$error_msg.="Please enter your Last Name<br>";
}
if($error_msg==''){
header(sprintf('Location:http://localhost/Test1.php'));
// other process here
} else {
echo "<font color=red>$error_msg</font>";
}
}
echo "
<form name='Form1' method='POST' action='' >
<div align='left' style='width: 424; height: 250'><p>
<input type='text' name='lname' size='30'> <font face='Arial' size='4'>Last Name</font>
<input type='text' name='fName' size='30'> <font face='Arial' size='4'>First Name</font>
<div align='left'><p>
<input type='submit' name='submit' value= \"$Test\" >
</form>";
?>
feyd | Please use Code: Select all
and [syntax="..."] tags where appropriate when posting code. Your post has been edited to reflect how we'd like it posted. Please read: [url=http://forums.devnetwork.net/viewtopic.php?t=21171]Posting Code in the Forums[/url] to learn how to do it too.[/color]
Posted: Wed May 03, 2006 9:20 pm
by feyd
Your browser is pulling an old cached version of the page. Clear your cache and you should be fine.
And seriously, start using the
Code: Select all
tags please. I'm getting tired of editing your posts to add them.
Posted: Wed May 03, 2006 9:31 pm
by mfbrowne
Thanks for the reply, I appreciate it.
Sorry about the tags I didn't realize I had to put them in. I have now read the information and will follow the proper format.
So is there any way to have a statement within the PHP to make sure the cache is cleared all the time.
Thanks
Mike
Posted: Wed May 03, 2006 9:34 pm
by feyd
look on the
header() page, there are references to no-cache. It's not guaranteed to have the cache clear, but most browsers will follow the directive.