show div tag in php statement - php

Question

I am now working on a WordPress theme base with the Advanced Custom Fields plugin, And I want to show a <div> tag when the if statement is true. Here is my code:
<?php
$rows = get_field('classification');
$sort = get_sub_field('sort');
$row_count = count($rows);
for ($i = 1; $i <= $row_count; $i++)?>
<?php if ( $i==1 || $i%5==0) { ?>
<div class="bor"></div>
<h3 style="text-align:center">
<?php echo $sort; ?>
<a id="browser"></a></h3>
<div class="bor"></div>
<?php } ?>
or something like that
<?php
$rows = get_field('classification');
$fenlei = get_sub_field('fenlei');
$row_count = count($rows);
for ($i = 1; $i <= $row_count; $i++)?>
<?php if ( $i==1 || $i%5==0) { ?>
echo '<div class="bor"></div>';
echo '<h3 style="text-align:center">';
<?php echo $fenlei; ?>
echo '<a id="browser"></a></h3>';
<div class="bor"></div>
<?php } ?>
But the content of the div tag doesn't show.
Any reply is appreciated！Thank you very much.

Answer 1

some of your echo statement are out php tags. use this:
<?php
$rows = get_field('classification');
$fenlei = get_sub_field('fenlei');
$row_count = count($rows);
for ($i = 1; $i <= $row_count; $i++){
if ( $i==1 || $i%5==0) {
echo "<div class='bor'></div>
<h3 style='text-align:center'>".$fenlei."
<a id='browser'></a></h3>
<div class='bor'></div>";
}
}
?>

Answer 2

If you wanted to show the html in php, i suggest you use the below code.
<?php
$rows = get_field('classification');
$fenlei = get_sub_field('fenlei');
$row_count = count($rows);
for($i = 1; $i <= $row_count; $i++){
if ( $i==1 || $i%5==0) {
echo '>div class="bor"<>/div<';
echo '>h3 style="text-align:center"<';
echo $fenlei;
echo '>a id="browser"<>/a<>/h3<';
echo '>div class="bor"<>/div<';
}
}
?>

Answer 3

I'm guessing you're using an ACF Pro Repeater field. in this case you need to use the_row() which will set the sub-field's correct content. look at this edited example from the Docs:
<?php
// check if the repeater field has rows of data
if( have_rows('repeater_field_name') ):
// loop through the rows of data
while ( have_rows('repeater_field_name') ) : the_row();
// display a sub field value
the_sub_field('sub_field_name');
endwhile;
endif;
?>
so, I think your code should look more like:
<?php
if(have_rows('classification')):
while (have_rows('classification') ) : the_row();
// Your Code...
endwhile;
endif;
?>
And, I've learned recently you need to count the rows outside the while loop. othewise it won't catch the rows amount.