display post_thumbnail with older thumbs alternative - wordpress

Question

I'm trying to add post_thumbnail support to an old wordpress theme that used to have a custom field for displaying thumbnail images. Trying to combine it as below, so older thumbnails won't get lost.
<?php
//display new featured image thumb
if (has_post_thumbnail()) {
the_post_thumbnail(homethumb);
}
//use the old thumb if there is no new one
$customField = get_post_custom_values("post-thumb");
elseif (isset($customField[0])) { ?>
<img src="<?php get_custom_field('post-thumb',true); ?>" class="avatar" alt="<?php the_title(); ?>" />
<?php
//or use default thumbnail if there is no thumb at all
} else { ?><img src="<?php echo get_option('theme_post_blankthumb',true); ?>" class="avatar" alt="<?php the_title(); ?>" /><?php }?>
which gives *Parse error: syntax error, unexpected T_ELSEIF*

Answer 1

If you use logical and organized code indentation, you're gonna see clearly where the problem is:
<?php
//display new featured image thumb
if (has_post_thumbnail()) {
the_post_thumbnail(homethumb);
}
//use the old thumb if there is no new one
$customField = get_post_custom_values("post-thumb");
elseif (isset($customField[0])) {
?>
<img src="<?php get_custom_field('post-thumb',true); ?>" class="avatar" alt="<?php the_title(); ?>" />
<?php
//or use default thumbnail if there is no thumb at all
} else {
?>
<img src="<?php echo get_option('theme_post_blankthumb',true); ?>" class="avatar" alt="<?php the_title(); ?>" />
<?php
}
The line $customField = get_post_custom_values("post-thumb"); doesn't belong there. Put it before the if/elseif/else.
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