title: Parse Geo location ISO 6709 into double array
body: <p>How to parse Geolocation  ISO 6709 in the format  <code>±DD.DDDD±DDD.DDDD</code> using php into double[lat,long]?</p>
  
  <p>examples:</p>
  
  <p><code>'+18.81983-19.91984'</code> would be <code>Array ( [0] =&gt; +18.81983 [1] =&gt; -19.91984 ) )</code></p>
  
  <p><code>'-8.8194+29.81982'</code> would be  <code>Array ( [0] =&gt; -8.8194 [1] =&gt; +29.81982 ) )</code></p>
  
  <p><code>'+29.1989+54.01983'</code> would be  <code>Array ( [0] =&gt; +29.1989 [1] =&gt; +54.01983) )</code></p>