Combine for and if statements - php

Question

I've been researching if this is possible, but I've drawn a blank, I'm wondering if it's possible to optimize these for and if statements together? cheers.
Edit (Updated #2) : Their is an issue with the code not looping through the pages.
<?php
// calculate total number of pages
$total_pages = ceil($total_rows / $records_per_page);
// range of links to show
$range = 2;
// display links to 'range of pages' around 'current page'
$initial_num = $page - $range;
$condition_limit_num = ($page + $range) + 1;
?>
<ul class="pagination margin-zero">
<?php if ($page>1) : ?>
<li>
<a href='<?php echo $page_url; ?>page=1' title='Go to the first page.'>First Page</a>
</li>
<?php endif; ?>
<?php
for ($x = min($initial_num, 0); $x <= max($condition_limit_num-1, $total_pages); $x++) :
if ($x == $page) :
?>
<li class='active'>
<?php echo $x; ?> <span class="sr-only">(current)</span>
</li>
<?php else : ?>
<li>
<a href='<?php echo $page_url; ?>page=<?php echo $x; ?>'><?php echo $x; ?></a>
</li>
<?php
endif;
endfor;
?>
<?php
if ($page<$total_pages) : ?>
<li>
<a href='<?php echo $page_url; ?>page=<?php echo $total_pages; ?>' title='Last page is <?php echo $total_pages; ?>'>
Last Page
</a>
</li>
<?php endif; ?>
</ul>

Answer 1

Of course you can combine them if you think about the maximum and minimum value that $x is allowed to get assigned.
The outer for loop would require $x to be contained in the interval [0; $condition_limit_num)
If you look only at the for and the first if you could decide that the minimum has to be larger than zero or initial_num, so you could for example use the minimum of initial_num and zero. The limit would work the same way using the maximum of condition_limit_num-1 and total_pages as uppermost reachable value, i.e. the interval [min($x, 0); max($condition_limit_num-1;$total_pages)].
But if you take into account the innermost if you require $x to have a specific value ($page). That means that this if is only "true" whenever $page is contained in the intervall [min($x, 0); max($condition_limit_num-1;$total_pages)] - you can reduce that check to a single if.
Update after question update:
Since the innermost if also has an else path the loop cannot be reduced to a single if:
<?php
for ($x = max($initial_num, 0); $x <= min($condition_limit_num-1, $total_pages); $x++)) :
if($x == $page) :
?>
<li class='active'>
<?php echo $x; ?> <span class="sr-only">(current)</span>
</li>
<?php else : ?>
<li>
<a href='<?php echo $page_url; ?>page=<?php echo $x; ?>'><?php echo $x; ?></a>
</li>
<?php
endif;
endfor;
?>