组合的php和html代码有错误-除最后一个li标签外，所有li标签中的hr标签内

Question

this is my code :

$output .=
'<li class="recentcomments recent-comment">
    <div class="wbrc-header">
    <span class="wbrc-header-avatar">' . get_avatar( $comment, 50/*avatar_size*/ ) . '</span>
    <div class="wbrc-header-AD">
    <span class="wbrc-header-author">' . $author . '</span>
    <span class="wbrc-header-date">' . $date . '</span>
    </div>
    </div>
    <div class="wbrc-body">
    <span class="wbrc-body-comment">' . $comment_text . '</span>
    </div>'.

    if( ($key + 1) != $comments->count() ) {
    echo '<hr>';
    } .
'</li>';

in this line - i want add "hr tag" in all "li tag" - except last li - but this line have error - what i must do?

if( ($key + 1) != $comments->count() ) {
    echo '<hr>';
}

Answer 1

You need to move your condition outside the concatenation.

// here i am using ternary operator for your condition.
$condition = (($key + 1) != $comments->count() ? '<hr>' : ''); 

Then, you can use like that:

$output .=
'<li class="recentcomments recent-comment">
    <div class="wbrc-header">
    <span class="wbrc-header-avatar">' . get_avatar( $comment, 50/*avatar_size*/ ) . '</span>
    <div class="wbrc-header-AD">
    <span class="wbrc-header-author">' . $author . '</span>
    <span class="wbrc-header-date">' . $date . '</span>
    </div>
    </div>
    <div class="wbrc-body">
    <span class="wbrc-body-comment">' . $comment_text . '</span>
    </div>'.$condition. // change this part
'</li>';

Using IF condition with concatenation (.) will produce "syntax error, unexpected 'if'" .