Make a PHP variable the value of a form Input

Question

I want to make a PHP variable the value of a hidden form input. The form is inside of my PHP (I'm echoing the form), and nothing that I have tried works.

Here's my code:

echo '
<div id = "login">
<form action = "process.php" method = "POST">
Name: <input type = "text" name = "name" required>

<!-- Here is where I need to make my PHP variable the value: -->
<input type = "text" name = "referer" style = "display: none" value = "$variable"> 

<input type = "submit" name = "submit" value = "Enter">
</form>
</div>
';

`value = "' . $variable . '"> ` the text inside `' '` is treated as literal and php won't parse the variables. — bansi, Jan 23 '16 at 03:37

Joseph Young · Answer 1 · 2016-01-23T03:42:32.977

0

The usual string replacements "$var" don't work here , as it's all contained within a single quote string which doesn't allow for string replacements. You will have to concatenate manually

echo '
<div id = "login">
<form action = "process.php" method = "POST">
Name: <input type = "text" name = "name" required>

<input type = "text" name = "referer" style = "display: none" value = "' . $variable . '"> 

<input type = "submit" name = "submit" value = "Enter">
</form>
</div>
';

edited Jan 23 '16 at 03:42

answered Jan 23 '16 at 03:39

Joseph Young

2,758
12
23

1

in php `.` is used for [concatenation](http://php.net/manual/en/language.operators.string.php) not `+` – bansi Jan 23 '16 at 03:42

score 0 · Accepted Answer · edited May 23 '17 at 11:52

Try this:

?><!-- exit out of php into html-->
<div id = "login">
<form action = "process.php" method = "POST">
Name: <input type = "text" name = "name" required>

<!--Here is where I need to make my PHP variable the value:-->
<input type = "text" name = "referer" style = "display: none" value = "<?=$variable?>">

<input type = "submit" name = "submit" value = "Enter">
</form>
</div>
<?php // enter back into php

The <?= ?> is a php short tag

Also, if you still want to use echo, try this:

//note: I changed the quotes
echo "
<div id = 'login'>
<form action = 'process.php' method = 'POST'>
Name: <input type = 'text' name = 'name' required>

<input type = 'text' name = 'referer' style = 'display: none' value = '$variable'> 

<input type = 'submit' name = 'submit' value = 'Enter'>
</form>
</div>
";

See this Q/A for more info

score 0 · Answer 3 · answered Jan 23 '16 at 03:44

Try this sample here https://eval.in/506642

   echo "
<div id = 'login'>
<form action = 'process.php' method = 'POST'>
Name: <input type = 'text' name = 'name' required>

//Here's where I need to make my PHP variable the value:
<input type = 'text' name = 'referer' style = 'display: none' value = '$variable'> 

<input type = 'submit' name = 'submit' value = 'Enter'>
</form>
</div>
";

Make a PHP variable the value of a form Input

3 Answers3