How do i remove quotes from url string in php - php

Question

I'm working on a wordpress plugin that streams videos using video js lib, but i can't figure out how my code automatically generates this (” and ″) in all my url supplied to the player.
this is what talking about, this is the url of the file :
"”https://s3-us-west-2.amazonaws.com/test-past3/data/Andrew+Cranston+-+Banners+of+Progress.mp4″"
this is my video player code:
<video class="video-js vjs-skin-flat-red vjs-16-9" id="<?php print $attr['video_id'];?>" style="max-width: 100%;"
controls
preload="<?php print $attr['preload']; ?>"
width="<?php print $width?>"
<?php print $muted ? "muted" : ""?>
height="<?php print $height?>"
poster="<?php print $attr['poster'];?>"
data-setup='{
"plugins": {
"vastClient": {
"adTagUrl": "<?php print $attr['adtagurl']; ?>",
"adCancelTimeout": 5000,
"adsEnabled": true
}
}
}'>
<source src="<?php print $attr['url']; ?>" type="<?php print $mime_type ?>"></source>
<p class="vjs-no-js">
To view this video please enable JavaScript, and consider upgrading to a
web browser that
<a href="http://videojs.com/html5-video-support/" target="_blank">
supports HTML5 video
</a>
</p>
</video>

Answer 1

Just use the substr() function :
<source src="<?php print substr($attr['url'], 1, -1); ?>"
But i recommand you to find why your $attr['url'] come with quotes :)

Answer 2

Another two solutions with str_replace() and preg_replace().
str_replace(['”', '″'], '', $url);
preg_replace('/[”″]+/', '', $url);
But substr() is simpler and faster in this specific case (remove first and last characters from string).
substr($url, 1, -1);