Simple PHP loop

I have a simple cvs file that have ticker symbols around 50. Below code $ticker gets its value from the cvs file. Currently below code works but the width of the page is not enough so what I need is in every 17 tickers in the cvs file it creates new raw. <!-- TradingView Widget BEGIN --> <span id="tradingview-copyright"><a ref="nofollow noopener" target="_blank" href="[login to view URL]" style="color: rgb(173, 174, 176); font-family: "Trebuchet MS", Tahoma, Arial, sans-serif; font-size: 13px;">Quotes by <span style="color: #3BB3E4">TradingView</span></a></span> <script src="[login to view URL]">{ "symbols": [ <?php foreach ($tickers as $i => $ticker) { { $arr[]= '{ "description": "", "proName": "BITTREX:'. $ticker .'" }'; } } echo implode(", ",$arr); ?>], "locale": "en" }</script> <!-- TradingView Widget END -->