title: Checking if in array key equals to value
body: <p>Hey I got small problem i looking for fast php solution for my problem.
  So I got array like this : </p>
  
  <pre><code>services: [
      {
      service_id: 8,
      service_name: "Air Condition - Cleaning",
      service_time_realisation: "30",
      service_price: "300"
      },
      {
      service_id: 6,
      service_name: "Carpet Cleaning",
      service_time_realisation: "10",
      service_price: "100"
      }
      ],
  </code></pre>
  
  <p>How I can check that each object service_id in this array is for example '7' ? </p>
  
  <p>could you help me with that please ? ;)</p>