title: how to remove specific key from multidimentional array
body: <p>I want to remove <code>[0]</code> key from below array.</p>
  
  <pre><code>Array
  (
      [0] =&gt; Array
          (
              [0] =&gt; Array
                  (
                      [PMSE] =&gt; Array
                          (
                              [id] =&gt; 1
                              [employee_name] =&gt; John Deep
                              [phone] =&gt; 12345
                              [created_on] =&gt; 2016-06-07 08:23:58
                          )
  
                      [Custom] =&gt; Array
                          (
                              [projectEmployeeCount] =&gt; 3
                          )
  
                  )
  
          )
  
      [1] =&gt; Array
          (
              [0] =&gt; Array
                  (
                      [PMSE] =&gt; Array
                          (
                              [id] =&gt; 1
                              [employee_name] =&gt; Alex Hell
                              [phone] =&gt; 12345
                              [created_on] =&gt; 2016-06-07 08:23:58
                          )
  
                      [Custom] =&gt; Array
                          (
                              [projectEmployeeCount] =&gt; 3
                          )
  
                  )
  
          )
  
      [2] =&gt; Array
          (
              [0] =&gt; Array
                  (
                      [PMSE] =&gt; Array
                          (
                              [id] =&gt; 1
                              [employee_name] =&gt; Doe Ria
                              [phone] =&gt; 12345
                              [created_on] =&gt; 2016-06-07 08:23:58
                          )
  
                      [Custom] =&gt; Array
                          (
                              [projectEmployeeCount] =&gt; 2
                          )
  
                  )
  
          )
  
  )
  </code></pre>
  
  <p><strong>Desire Output</strong></p>
  
  <pre><code>Array
      (
          [0] =&gt; Array
              (
                  [PMSE] =&gt; Array
                      (
                          [id] =&gt; 1
                          [employee_name] =&gt; John Deep
                          [phone] =&gt; 12345
                          [created_on] =&gt; 2016-06-07 08:23:58
                      )
  
                      [Custom] =&gt; Array
                      (
                          [projectEmployeeCount] =&gt; 3
                      )
              )
  
          [1] =&gt; Array
              (
                  [PMSE] =&gt; Array
                      (
                          [id] =&gt; 2
                          [employee_name] =&gt; Alex Hell
                          [phone] =&gt; 12345
                          [created_on] =&gt; 2016-06-07 08:23:58
                      )
  
                      [Custom] =&gt; Array
                      (
                          [projectEmployeeCount] =&gt; 5
                      )
              )
  
          [2] =&gt; Array
              (
                  [PMSE] =&gt; Array
                      (
                          [id] =&gt; 3
                          [employee_name] =&gt; Doe Grey
                          [phone] =&gt; 12333
                          [created_on] =&gt; 2016-06-07 08:23:58
                      )
  
                      [Custom] =&gt; Array
                      (
                          [projectEmployeeCount] =&gt; 4
                      )
              )
  
  
      )
  </code></pre>