Pastable version of get username from database

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            <pre class="sunburst">&lt;?php
	<span style="color:#99CF50;">function</span> <span style="color:#89BDFF;">username</span>(<span style="color:#3E87E3;"><span style="color:#3E87E3;">$</span>user_id</span> <span style="color:#E28964;">=</span> <span style="color:#3387CC;">null</span>) {

<span style="color:#3E87E3;"><span style="color:#3E87E3;">$</span>user_id</span> <span style="color:#E28964;">=</span> (<span style="color:#3E87E3;"><span style="color:#3E87E3;">$</span>user_id</span> <span style="color:#E28964;">!</span><span style="color:#E28964;">=</span> <span style="color:#3387CC;">null</span>) ? <span style="color:#3E87E3;"><span style="color:#3E87E3;">$</span>user_id</span> : current_user()<span style="color:#E28964;">;</span> <span style="color:#AEAEAE;font-style:italic;"><span style="color:#AEAEAE;font-style:italic;">//</span> if inserted ID to function, else return logged user ID</span>

<span style="color:#E28964;">if</span> ( <span style="color:#E28964;">!</span><span style="color:#9B859D;">User</span><span style="color:#E28964;">::</span>get_user_details(<span style="color:#3E87E3;"><span style="color:#3E87E3;">$</span>user_id</span>) ) <span style="color:#AEAEAE;font-style:italic;"><span style="color:#AEAEAE;font-style:italic;">//</span> if user does not exists</span>
		<span style="color:#E28964;">return</span> <span style="color:#3E87E3;"><span style="color:#3E87E3;">$</span>id</span><span style="color:#E28964;">;</span> <span style="color:#AEAEAE;font-style:italic;"><span style="color:#AEAEAE;font-style:italic;">//</span> return only ID</span>
		
		<span style="color:#E28964;">else</span> {
			
			<span style="color:#3E87E3;"><span style="color:#3E87E3;">$</span>inner</span> <span style="color:#E28964;">=</span> <span style="color:#9B859D;">User</span><span style="color:#E28964;">::</span>get_user_details(<span style="color:#3E87E3;"><span style="color:#3E87E3;">$</span>user_id</span>)<span style="color:#E28964;">;</span> <span style="color:#AEAEAE;font-style:italic;"><span style="color:#AEAEAE;font-style:italic;">//</span> if user exist</span>
			<span style="color:#E28964;">return</span> <span style="color:#3E87E3;"><span style="color:#3E87E3;">$</span>inner</span>[<span style="color:#65B042;"><span style="color:#65B042;">'</span>username<span style="color:#65B042;">'</span></span>]<span style="color:#E28964;">;</span> <span style="color:#AEAEAE;font-style:italic;"><span style="color:#AEAEAE;font-style:italic;">//</span> return ID username</span>
		}
	}
?&gt;
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