PHP add class to html div

问题

i would like to add a class to my html (.complete) with php:

if( get_field('to-do-repeater') )
{
    Add (complete) class to <div class="to-do to-do-wrap"> should be <div class="to-do to-do-wrap complete">
}
else
{
    Do nothing
}

回答1:

Try this code :

<div class="to-do to-do-wrap<?php echo get_field('to-do-repeater') ? ' complete' : '' ?>"></div>

回答2:

<?php

echo "<div class=\"to-do to-do-wrap ";
if(get_field('to-do-repeater'))
{
    echo "complete";
}
echo " \"></div>";

?>

来源：https://stackoverflow.com/questions/11852425/php-add-class-to-html-div