Having braking problems

Does anyone know how I can stop this error?

if ($row['size30'] > 0) {
echo '
if (document.forms["form"]["quantity"].value > '.$row['size30'].') {
alert ("Can't add because quantity exceeds availability.");
return false;
}
';
}

The problem is with the apostrophe in the word Can't. Its causing a braking out issue.

A cheap method:


if ($row['size30'] > 0) {
echo '
if (document.forms["form"]["quantity"].value > '.$row['size30'].') {
alert ("Can'; echo "'"; echo 't add because quantity exceeds availability.");
return false;
}
';
}


Anyone know a more professional method?

You know what, who cares it works. :)

Resolved.

The simpler solution would be to replace Can't with Can\'t

That didn't work.

Not so, the problem lays else where... I shall report.

It was working, but the script wasn't being triggered due to an associated name error.

Anyone know a more professional method?
if there are too many 's and "s, I check whether I can use the HEREDOC syntax.