在Textarea中显示PHP

Question

I'm trying to display a php variable in a text area but it just outputs what is in between the text area tags

Here's my code:

echo  "Allergens Contained "    .'<textarea rows="4"     name="Allergens_Contains">   <?php echo $contains; ?></textarea>';

In the text area on my webpage all I'm getting is: <?php echo $contains; ?> <?php echo $contains; ?>

Answer 1

You should concatenate strings and variables via:

<?php
echo 'This is text ' . $php_variable . ' more text';

or

<?php
echo "This is text " . $php_variable . " more text";

or

<?php
echo "This is text $php_variable more text";

or

<?php
echo "This is text {$php_variable} more text";