Adding script to the the function file, but erroring out

I’m in the process of learning php, but this piece of code needs to go in asap. Can someone please help? I’m trying to add this to my wordpress function file.

I have two pop up codes from our ad platform (Flite) to display on our homepage.

this is for the mobile ad

//mobile campaign

/* <!-- Campaign: pop up -->
<!-- Site: Seniorstyleguide.com -->
<!-- Placement: Seniorstyleguide.com #3 -->
<!-- Placement ID: 26e3aedf-e0bf-4389-a5d0-2b23bfbb3797 -->
<!-- Placement Size: 300x250 --> */

<div style="display:none !important;" id="flite-click-macro-26e3aedf-e0bf-4389-a5d0-2b23bfbb3797">ENTER_UNENCODED_CLICK_MACRO_HERE</div>

<script>
    (function() {
        var guid = "26e3aedf-e0bf-4389-a5d0-2b23bfbb3797", o = window, r = "", m, s = "http:", e = encodeURIComponent, x = 0, f = document.createElement("script");
        o.FLITE=o.FLITE || {};
        o.FLITE.config = o.FLITE.config || {};
        o.FLITE.config[guid] = o.FLITE.config[guid] || {};
        o.FLITE.config[guid].cb = Math.random();
        o.FLITE.config[guid].ts = (+ new Date());
        try{ r = (top===self && top.location) ? top.location.href : document.referrer || (top.location && top.location.href) || "";}catch(er){x=1}
        try{ s = o.location && o.location.protocol === "https:"? o.location.protocol : s;}catch(er){x+=2}
        try{ m = r.match(new RegExp("[A-Za-z]+:[/][/][A-Za-z0-9.-]+")); } catch(er) {x+=4}
        try{ var fm = document.getElementById("flite-click-macro-" + guid); var c = (fm && (fm.innerText || fm.textContent || fm.innerHTML)) || ""; c = c.replace(/^\s+|\s+$/g, ""); o.FLITE.config[guid].ct = c; } catch(err) {x+=8}
        f.src = [s,"//r.flite.com/syndication/uscript.js?i=",e(guid),"&v=3","&x=us",x,"&cb=",o.FLITE.config[guid].cb,"&d=",e((m && m[0]) || r), "&tz=", (new Date()).getTimezoneOffset()].join("");
        document.write(f.outerHTML);
        })();
</script>
<noscript>
    <a style="text-decoration:none;display:block;border:0;" href="//r.flite.com/syndication/backuplink/i/26e3aedf-e0bf-4389-a5d0-2b23bfbb3797?ct=ENTER_ENCODED_CLICK_MACRO_HERE" target="_blank">
        <img border="0" src="//r.flite.com/syndication/backupimage/i/26e3aedf-e0bf-4389-a5d0-2b23bfbb3797?at="/>
    </a>
</noscript>

This is for our desktop ad

//desktop campaign
/*
<!-- Campaign: pop up -->
<!-- Site: Seniorstyleguide.com -->
<!-- Placement: Seniorstyleguide.com #4 -->
<!-- Placement ID: 68a18a5d-9b38-4a28-bd29-71f0fbe9d407 -->
<!-- Placement Size: 750x600 -->*/

<div style="display:none !important;" id="flite-click-macro-68a18a5d-9b38-4a28-bd29-71f0fbe9d407">ENTER_UNENCODED_CLICK_MACRO_HERE</div>

<script>
    (function() {
        var guid = "68a18a5d-9b38-4a28-bd29-71f0fbe9d407", o = window, r = "", m, s = "http:", e = encodeURIComponent, x = 0, f = document.createElement("script");
        o.FLITE=o.FLITE || {};
        o.FLITE.config = o.FLITE.config || {};
        o.FLITE.config[guid] = o.FLITE.config[guid] || {};
        o.FLITE.config[guid].cb = Math.random();
        o.FLITE.config[guid].ts = (+ new Date());
        try{ r = (top===self && top.location) ? top.location.href : document.referrer || (top.location && top.location.href) || "";}catch(er){x=1}
        try{ s = o.location && o.location.protocol === "https:"? o.location.protocol : s;}catch(er){x+=2}
        try{ m = r.match(new RegExp("[A-Za-z]+:[/][/][A-Za-z0-9.-]+")); } catch(er) {x+=4}
        try{ var fm = document.getElementById("flite-click-macro-" + guid); var c = (fm && (fm.innerText || fm.textContent || fm.innerHTML)) || ""; c = c.replace(/^\s+|\s+$/g, ""); o.FLITE.config[guid].ct = c; } catch(err) {x+=8}
        f.src = [s,"//r.flite.com/syndication/uscript.js?i=",e(guid),"&v=3","&x=us",x,"&cb=",o.FLITE.config[guid].cb,"&d=",e((m && m[0]) || r), "&tz=", (new Date()).getTimezoneOffset()].join("");
        document.write(f.outerHTML);
        })();
</script>
<noscript>
    <a style="text-decoration:none;display:block;border:0;" href="//r.flite.com/syndication/backuplink/i/68a18a5d-9b38-4a28-bd29-71f0fbe9d407?ct=ENTER_ENCODED_CLICK_MACRO_HERE" target="_blank">
        <img border="0" src="//r.flite.com/syndication/backupimage/i/68a18a5d-9b38-4a28-bd29-71f0fbe9d407?at="/>
    </a>
</noscript>

I found this piece to check for mobile

/* USER-AGENTS
================================================== */
function check_user_agent ( $type = NULL ) {
        $user_agent = strtolower ( $_SERVER['HTTP_USER_AGENT'] );
        if ( $type == 'bot' ) {
                // matches popular bots
                if ( preg_match ( "/googlebot|adsbot|yahooseeker|yahoobot|msnbot|watchmouse|pingdom\.com|feedfetcher-google/", $user_agent ) ) {
                        return true;
                        // watchmouse|pingdom\.com are "uptime services"
                }
        } else if ( $type == 'browser' ) {
                // matches core browser types
                if ( preg_match ( "/mozilla\/|opera\//", $user_agent ) ) {
                        return true;
                }
        } else if ( $type == 'mobile' ) {
                // matches popular mobile devices that have small screens and/or touch inputs
                // mobile devices have regional trends; some of these will have varying popularity in Europe, Asia, and America
                // detailed demographics are unknown, and South America, the Pacific Islands, and Africa trends might not be represented, here
                if ( preg_match ( "/phone|iphone|itouch|ipod|symbian|android|htc_|htc-|palmos|blackberry|opera mini|iemobile|windows ce|nokia|fennec|hiptop|kindle|mot |mot-|webos\/|samsung|sonyericsson|^sie-|nintendo/", $user_agent ) ) {
                        // these are the most common
                        return true;
                } else if ( preg_match ( "/mobile|pda;|avantgo|eudoraweb|minimo|netfront|brew|teleca|lg;|lge |wap;| wap /", $user_agent ) ) {
                        // these are less common, and might not be worth checking
                        return true;
                }
        }
        return false;
}	

$ismobile = check_user_agent('mobile');
if($ismobile) {
	
return 'yes';

} else {

return 'no';

}

I’m using the function is_home(){} now I just need to integrate them all.

Did you try to add the above JS code?

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