PHP 'While' within a ForEach loop pulling from SQL DataBase - php

Question

I have a little table being duplicated several times based on the number of entries there are in my SQL Database, which let's say is about colours. These tables will go one place to the right with each new entry. Within that, I now want, within each entry, to be able to automate an output for a few fields. For example, a single table entry might be 'reds' and now I want to display the different shades of red, i.e. 'shade1', 'shade2', 'shade3', 'shade4' from that, and then the next entry might be 'yellows' and I would want it to display as many yellows there were added, i.e. 'shade1', 'shade2'. My code is like this:
<?php
error_reporting(E_ALL ^ E_NOTICE);
$stmt = $conn->prepare("SELECT * FROM colours");
$stmt->execute();
$colours = $stmt->fetchALL();
if($colours){
$i = 1;
foreach ($colours as $key => $colour) {
$coloursrow1 .='<table >
<tr><th>' . "<b>{$colour['colour']}</b>" . '</th></tr>
<tr><td>' . "<img src='{$colour['shade1']}' />" . '</td></tr>
<tr><td>' . "<img src='{$colour['shade2']}' />" . '</td></tr>
<tr><td>' . "<img src='{$colour['shade3']}' />" . '</td></tr>
<tr><td>' . "<img src='{$colour['shade4']}' />" . '</td></tr>
</table>';
$i++;
}
}
?>
And I wondered if instead of all the lines like <tr><td>' . "<img src='../colours/reds/shade1.jpg' />" . '</td></tr>, I could put something like
if($colours){
$i = 1; $x = 1;
foreach ($colours as $key => $colour) {
$coloursrow1 .='<table >
<tr><th>' . "<b>{$colour['colour']}</b>" . '</th></tr>';
}
while ($x < 6) {
'<tr><td>' . "<img src='{$colour['shade$x']}' />" . '</td></tr>';
$x++;
}
foreach ($colours as $key => $colour) {
'</table>';
$i++;
}
}
So that it would grab and output them automatically and also giving me the ability to put a cap on how many can be output.
I tried different ways to accomplish this, but I just keep hitting dead ends. I must be doing something wrong(?)

Answer 1

Seems like it would be something like this, since PDO::fetchAll() returns an empty array or false on error. So just iterate over that set directly. Also, the array access is wrong, it should be {$colour['shade'.$x]}.
<?php
error_reporting(E_ALL ^ E_NOTICE);
$stmt = $conn->prepare("SELECT * FROM colours");
$stmt->execute();
$colours = $stmt->fetchALL();
foreach ($colours as $colour) {
$coloursrow1 .= "<table><tr><th><b>{$colour['colour']}</b></th></tr>";
$x = 1;
while ($x < 6) {
$coloursrow1 .= "<tr><td><img src='{$colour['shade'.$x]}' /></td></tr>";
$x++;
}
$coloursrow1 .= '</table>';
}