Add space to every line outside PHP code block - php

Question

I know exactly what I want to realize, but I dont really know how to go about it with PHP.
I have made up some code that should serve as the concept of how it should actually be.
I want to indent every new line with X amount of spaces for the code that's out of the brackets.
Is there a way to accomplish what I want?
I am not trying to do anything visual on the design, but rather have my code properly indented.
<?php
// Other PHP Code
foreach(explode("\n", $content) as $line) {
?>
This code outside the php block should be in the $content variable above to alter it.
<div class="content">
<!-- Content -->
</div>
<?php
echo str_repeat(" ", 4), $line;
}
// Other PHP Code
?>

Answer 1

What about using css margin? You can give the line a class like this:
html:
<div class="myClass">here is my special text</div>
css:
.myClass{
margin-left: 10px;
}

Answer 2

Replace echo str_repeat(" ", 4), $line;
by echo str_repeat(" ", 4), $line;

Answer 3

Indenting the source code itself works fine. No need for any fancy PHP code.
<?php
// Other PHP Code
foreach(explode("\n", $content) as $line) {
?>
<!--Indent here!-->
<div class="content">
<!-- Content -->
<?php echo $line; //assuming this is what you wanted to print ?>
</div>
<?php
}
// Other PHP Code
?>
Notice how the HTML part (div) is indented. PHP will keep this indentation when generating the resulting HTML code.