Change background color in PHP using CSS

Question

I have the following PHP code that fill table from mySQL database

<?php               
     while($res = mysqli_fetch_array($result)) {         
         echo "<tr>";
         echo "<td>".$res['id']."</td>";
         echo "<td>".$res['name']."</td>";
         echo "<td>".$res['number']."</td>";
         echo "<td>".$res['nid']."</td>";     
 }
 ?>

Using CSS, How can I change background color for nid field?

I'm has trying the below, but it doesn't work:

echo "<td style="background-color:red" >".$res['nid']."</td>";

Or simply escape the double quotes i.e. `echo "".$res['nid'].""; — Nick, Oct 28 '18 at 11:50

score 2 · Answer 1 · answered Oct 28 '18 at 11:44

2

Try this

echo "<td style='background-color:red' >".$res['nid']."</td>";

answered Oct 28 '18 at 11:44

Bonish Koirala

641
5
16

score 1 · Answer 2 · answered Oct 28 '18 at 11:45

1

Use this:

echo "<td style='background-color:red'>".$res['nid']."</td>";

answered Oct 28 '18 at 11:45

Marty1452

430
5
19

SuperDJ · Answer 3 · 2018-10-28T12:27:28.820

You can use any of the following examples.

Use different "quotes" for attributes

echo '<td style="background-color:red">'.$res['nid'].'</td>';

Or use the Complex (curly) syntax

echo "<td style='background-color:red'>{$res['nid']}</td>";

Or you can escape the double quotes in the string

echo "<td style=\"background-color:red\">".$res['nid']."</td>";

Or use multiple techniques

echo "<td style=\"background-color:red\">{$res['nid']}</td>";

Do note that the {} can only be used in a string/ double quotes.

Your code doesn't work since everytime you use the same quote after the first you break out of the string. So with:

"<td style="background-color:red" >".$res['nid']."</td>";

PHP thinks "<td style=" is a string and background-color:red is PHP code which it isn't. You can see that in the code highlighting aswell. Maybe this question will help you explain it a bit better.

Funny how everyone is giving a solution, but doesn't explain why it's not working. If you explain not to or how to mix quotes, I'll upvote this answer. — DigiLive, Oct 28 '18 at 11:56

score 0 · Answer 4 · answered Oct 28 '18 at 11:57

I think you need to escape the " character. The escaping character is \, so you have to use it as a prefix for your ". For example:

<?php               
     $val1="I want this normal";
     $val2="I want this normal";
     $val3="I want this normal";
     $val4="I want this RED";

     echo "<table><tr>";
     echo "<td>".$val1."</td>";
     echo "<td>".$val2."</td>";
     echo "<td>".$val3."</td>";
     echo "<td style=\"background-color:red;\" >".$val4."</td>"; //Change the " for '  or escape " with \
     echo "</tr></table>";  //And don't forget to close this tag too ;)

?>

In your code it would be something like:

<?php               
 while($res = mysqli_fetch_array($result)) {         
     echo "<tr>";
     echo "<td>".$res['id']."</td>";
     echo "<td>".$res['name']."</td>";
     echo "<td>".$res['number']."</td>";
     echo "<td style=\"background-color:red\" >".$res['nid']."</td>";

} ?>

Change background color in PHP using CSS

4 Answers4