PHP Echo to a href - ' and "

Question

I have a hint echo'd however, i have a issue with " and ' i can echo numerical values to the string, but not words..

$hint='<a href="javascript:void(0)" 
 onclick="javascript:document.contactForm.musicDetailTitle4.value=5;
 document.contactForm.musicDetailArtist4.value=foo;">fill form</a>'.

5 works but foo doesn't works.

UPDATE

Still not getting an output

$hint='<a href="javascript:void(0)" onclick="javascript:document.contactForm.itemDetailTitle4.value=\"$artist\"; document.contactForm.itemDetailArtist4.value=4;">fill form</a>'.

Whole Code

echo $hint='<a href="javascript:void(0)" onclick="javascript:document.contactForm.itemDetailTitle4.value="'.$brand.'"; document.contactForm.itemDetailTitle4.value=4;">fill form</a>'.$artist."-".$title."-".$id."</a>";

Output is...

<a href="javascript:void(0)" onclick="javascript:document.contactForm.itemDetailTitle4.value=" ";="" document.contactform.itemDetailTitle4.value="4;&quot;">fill form</a>Tomato Soup-Heinz-0001<a href="javascript:void(0)" onclick="javascript:document.contactForm.itemDetailTitle4.value=" ";="" document.contactform.itemDetailTitle4.value="4;&quot;">fill form</a>Tomato Soup-Heinz-0001

Answer 1

您需要转义报价

$hint='<a href="javascript:void(0)" onclick="javascript:document.contactForm.musicDetailTitle4.value=5; document.contactForm.musicDetailArtist4.value=\'foo\';">fill form</a>'.

Answer 2

It doesn't have much to do with PHP but rather JavaScript.

When passing a numeric value you just pass the number itself, but when passing strings you must wrap them in quotations otherwise the compiler will mistake "foo" for a variable named foo which may or may not exist.

As others mentioned, all you have to do is wrap your string like so: \\'foo\\'

The slashes are because you don't want to close your echo which was also opened using a single quote, so you need to escape the character so when it's echoed to the user it will become 'foo' .

Answer 3

Try this -

$hint='<a href="javascript:void(0)" onclick="javascript:document.contactForm.musicDetailTitle4.value=5; document.contactForm.musicDetailArtist4.value=\'foo\';">fill form</a>'.

When declaring a string value you must add quotes, and when adding it in this way you must escape those quotes using the \\ key.