隐藏来自php和css stament的value /输出的div

Question

I am going to use a button to set a value to a variable, I want to be able to hide a <div> using the result from a PHP / CSS statement.

$day and $time would be set using the CSS set_date() function. Example below:

//Check if $day is within a business week/day
if ($day > 5) {
    //Hide the div
    //Check $time is within business hours and day
} else if ($time>=9 && $time<17) {
    //Show the div
    //Otherwise
} else {
   //Make div invisible
}

That's how I want to do it but it isn't working as expected, any help would be much appreciated!

If necessary, here's the button resource:

Answer 1

if ($day > 5) {
           $div='';
        }

        //check if it is within business hours and day
        //if yes show div
        elseif ($time>=9 && $time<17) {
          $div='<div> whatever inside</div>';
        }
        //if not make div not visable
        else {
          $div='';
        }

//if you use $div="<div>i am a div with a " inside </div>";
//then do this $div="<div>i am a div with a \" inside</div>"; the \allows the php to know it must not use the next character as code 

in your html

<?php echo $div;?>

Answer 2

<?php
//check if it is within a business week/day
if ($day > 5) {
?>
//hide the div
<script language="javascript">
$(document).ready(function() {
$("#mydiv").hide(); 
});
</script>
<?php
}

//check if it is within business hours and day
//if yes show div
elseif ($time>=9 && $time<17) {
?>
//hide the div
<script language="javascript">
$(document).ready(function() {
$("#mydiv").show();
});
</script>
<?php
}
//if not make div not visable
else {
<script language="javascript">
$(document).ready(function() {
$("#mydiv").hide();
});
</script>
}
?>

Answer 3

Did you checked the PHP alternative syntax

you can simply do that

<?php if($day > 5): ?>
    <div id="button1" style="display:none"> Hidden </div> <!-- This is plain html -->
<?php elseif($time >= 9 && $time < 17): ?>
    <div id="button2"> Button text </div>
<?php else: ?>
    <div id="button3" style="opacity:0"> Invisible </div>
<?php endif; ?>

It is really great and clean to use PHP alternative syntax if you mixing HTML and PHP, you're completely clean and clear when using Quotes.

Answer 4

Does the <div> need to be invisible? Couldn't you just not have an else condition?

With just one conditional you can write

if (($time>=9 && $time<17) && ($day < 5)) {
 // Div is shown 9am - 7pm on weekdays
 // echo div

}