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How to echo php string with special characters inside javascript function parameter

I have a button on my website that triggers an onclick event with the following function
onclick="
updatePage('<?php echo $page['title']; ?>','<?php echo $page['id']; ?>','<?php echo $page['attachedfiles']; ?>','<?php echo $page['attachmentprefix']; ?>');
"
this usually works fine but if the $page['title'] contains a single quote it breaks the rest for example if the string was "What's your name?" it would break after the "what '"
Is there a fix for this, i have tried using
echo htmlspecialchars($page['title'])
but it doesnt work.
I am still a beginner so i am not too sure on how to solve this.
I am sorry if this is a duplicate question but from other solutions ive seen this seems like more of a javascript issue rather than php

You can try the addslashes function. Example:
<div class="thediv"></div>
<?php
$title = "This isn't the title";
?>
<script>
var div = document.querySelector('.thediv');
div.innerHTML = '<?= addslashes($title) ?>';
</script>

including html tag in a php code, specifically dealing with href function inside a php block

enter the html code once a condition is satisfied but then i aim to use php values and html tags together.
tried tag etc and got most of the part in running just unable to deal with href beacuse it is referencing to some values.
not sure where to use "" or ``.
<?php.....
echo `Yes`;
?>
"yes" should work as a hyperlink but at the moment the php values are not processed that`s why no result.

You are using wrong sequence of quote
<?php
...
?>
<?php
echo '<a href="limitdatabase.php?Dropdown=' .
$_GET['Dropdown'].
';&search='.
$search_name .
';&wise='.
$_GET['wise'].
';">Yes</a>';
?>
and you should use single quote and not backtics for string

You are using incorrect concatenation. Whenever you want to add any PHP variable then you need to close the braces and need to start after PHP variable as below:
<?php
echo 'Yes';
?>
Also you should wrap Dropdown and wise in braces as it will not work directly in get as you have used. Hope it helps you!

You can use combination of html with php inside:
<a href="limitdatabase.php?Dropdown=<?PHP echo $_GET[Dropdown] . "&search="
. $search_name . "&wise=" . $_GET[wise]; ?>">Yes</a>
Also, you can input whole link in string:
<?php
$mylink = "limitdatabase.php?Dropdown=" . $_GET[Dropdown] . "&search=" . $search_name . "&wise=" . $_GET[wise];
?>
YES

How to add a new line within JS confirm message to be shown on click of a link?

I'm trying to add \n but this breaks the onclick event – no message is popped up at all.
It works OK when I remove the \n character.
<?php
echo "<a href='logs.php?clear=true' onclick='return confirm(\"Are you sure:\n To delete this\");'>Clear</a>";

You need to use double backslashes, the first will be interpreted by PHP. Try this instead:
<?php
echo "<a href='logs.php?clear=true' onclick='return confirm(\"Are you sure:\\n To delete this\");'>Clear</a>";
Though you may want to use a heredoc instead:
<?php
echo <<< HTML
Clear
HTML;
Or, even better, use proper event binding like with jQuery:
<?php
echo <<< HTML
Clear
<script>
$("#clearconfirm").click(function(e) {
if (!confirm("Are you sure:\\n To delete this")) {
e.preventDefault();
}
});
</script>
HTML;

Writing HTML code in Javascript inside a PHP code

I need to write in PHP, inside a Javascript portion code, an hidden input tag with an javascript array that I need to pass to another PHP code ..
This is the sample code ...
echo '<script type="text/javascript">';
<other javascript code .... >
echo 'arr_selections_json = JSON.stringify(arr_selections);';
echo 'document.write("<input type="hidden" name="arr_selections_json" value="+arr_selections_json+" />")';
This code doesn't work .... Any suggestions?
Thank you in advance .. .

You need to JS-escape the double quotes inside the argument of document.write()
e.g.
echo 'document.write("<input type=\\"hidden\\" name=\\"arr_selections_json" value=\\"" + arr_selections_json + "\\" />")';
Also, I've had recent weird cases, where document.write wouldn't consider the closing slash (/>), whereas it's HTML-5 compliant. I had to escape with a backslash the closing slash.

What about this ?
<script type="text/javascript">;
<other javascript code .... >
arr_selections_json = <?php echo JSON.stringify(arr_selections); ?>;
document.write('<input type="hidden" name="+arr_selections_json+" value="+arr_selections_json+" />');
</script>
I'm not sure what are your php part, but i think you should be ok like this.

How to use quotes in nested PHP->JS->HTML

I'm trying to figure out how i can use quotes in a third "layer".
Do i need to "escape" the quotes somehow?
PHP/JS/HTML
echo "<script type='text/javascript'>";
echo "$('#rImgObjNr').text('Bilder: ".$imgDirs[$randomDir]."<i class='fa'></i>');";
echo "</script>";
It's my icon element that has problems with it's quotes:
<i class='fa'></i>
When i use 'I "close" JS text.. and if i use " i close the PHP.
How can i solve this?
Can i use my HTML element inside of this PHP/JS text?

You need to escape your double quotes by prepending backslash.
Replace your code like this below.
echo "<script type='text/javascript'>";
echo "$('#rImgObjNr').text('Bilder: ".$imgDirs[$randomDir]."<i class=\"fa\"></i>');";
echo "</script>";

May be it work :
<script type='text/javascript'>
$('#rImgObjNr').text("Bilder: <?php echo $imgDirs[$randomDir];?><i class='fa'></i>");
</script>

The solution was to change .textto .html and then escape the quotes like \".
CODE
echo "<script type='text/javascript'>";
echo "$('#rImgObjNr').html('Bilder: ".$imgDirs[$randomDir]."<i class=\"fa\"></i>');";
echo "</script>";