PHP echo JS which includes PHP variable

Question

I have sendForm.php file, which is php using PHPMailer for sending form. In between tags there is echo and I need to use PHP variable in between tags. Is that possible somehow? I know this is too much of combining PHP and JS, but what can I do... I need a window pop-up, that's why I use also JS. The echo itself prints only to the webpage itself.

$totalSize = ($totalSize/(1024*1024));
$totalSize = round($totalSize,2);

if(!$mail->Send()) {
   echo "Error sending form! You are trying to send too large files. Their size is: ", $totalSize, " MB";
   echo '<script type="text/javascript">alert("Error sending form! You are trying to send too large files. Their size is: ??? ");</script>';
   }

How can I print $totalSize variable inside of the JS in the place of those question marks in the 2nd echo? Thanks for your help. I'm still a beginner.

echo '<script type="text/javascript">alert("Error sending form! You are trying to send too large files. Their size is: ', $totalSize, '");</script>';, No ? — BlitZ
– BlitZ, Commented Jun 3, 2013 at 9:11
Well, I have already tried and it seems to break the script somehow - the windows just don't pop up after adding this. — TeeJay
– TeeJay, Commented Jun 3, 2013 at 9:15
change Their size is: ??? ") to Their size is: $totalSize ") — Robert
– Robert, Commented Jun 3, 2013 at 9:32

Bere · Accepted Answer · 2013-06-03 09:12:56Z

1

if(!$mail->Send()) {
   echo "Error sending form! You are trying to send too large files. Their size is: ". $totalSize. " MB";
   echo '<script type="text/javascript">alert("Error sending form! You are trying to send too large files. Their size is: '. $totalSize. '");</script>';
   }

//I corrected some errors in the first echo (replace comma with dot )

answered Jun 3, 2013 at 9:12

Bere

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6 Comments

ɴᴀᴛᴇ ᴅᴇᴠ Over a year ago

There are no errors in the first statement, using , within echo is valid to output a variable number of parameters.

mishu Over a year ago

The comma is not used to concatenate strings, that's what the dot is for. Simply the echo function accepts a variable number of parameters so you can list them separated by comma. It is a very common practice to use it like that as you are avoiding an useless operation (the concatenation)

Bere Over a year ago

I understand and @mishu and FDL.

TeeJay Over a year ago

Thank you, this works nice :) btw how is it with ' and " ? Is there an order how to use them properly?

Robert Over a year ago

yes there is '' is string literal which is not parsed by php, "" is parsed by php that is why you can use php variables there. More on php.net/manual/en/language.types.string.php

|

marlonp33 · Accepted Answer · 2013-06-03 09:19:53Z

1

PHP is a server side language, while JavaScript is a client side language. If you are trying to validate your forms on the server side without reloading the page (and let JavaScript pop up a warning), look into AJAX.

answered Jun 3, 2013 at 9:19

marlonp33

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4 Comments

TeeJay Over a year ago

Found out that this can be done also with javascript. stackoverflow.com/questions/16932907/…

marlonp33 Over a year ago

Sure it can, but your question was if it is possible to combine JavaScript with PHP, not to solve the particular problem. If you're having trouble understanding the relation between the two, check: programmers.stackexchange.com/questions/171203/…

TeeJay Over a year ago

Yes it was, sorry, I was thinking about more problems in the time I was writing this comment to you. However, you were thinking forward as I was according to your reply. Never mind, I still got you +1 for expanding my horizon :)

marlonp33 Over a year ago

No propblem! It's not about me getting the reputation, it's about getting the right answer to the right question

Yadav Chetan · Accepted Answer · 2013-06-03 09:13:02Z

0

try this

  if(!$mail->Send()) {
    echo "Error sending form! You are trying to send too large files. Their size is: ".$totalSize." MB";
        ?>
<script type="text/javascript">
alert("Error sending form! You are trying to send too large files. Their size is: <?php echo $totalSize;?> ");
</script>
<?php }

answered Jun 3, 2013 at 9:13

Yadav Chetan

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3 Comments

TeeJay Over a year ago

Thank you. However, I can't divide the PHP because of an instance of PHPMailer ( $mail = new PHPMailer(); ) working with my whole file.

Yadav Chetan Over a year ago

you can divide it may doesn't make any difference in mailer :)

Yadav Chetan Over a year ago

try it once for your knowledge and also for my knowledge :)

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