php - Traverse $_POST Array to show field Names -

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Is there an array, such as to see the name of $ _POST field and not just the value values Do something 

  foreach (as the $ _POST $ value) {echo $ value; }   
 This will show me the value - but I would like to display the name in that array too. If my $ _POST value was something like $ _POST ['some'] and it was collected 55; I want to output "some".  
 I have a few selected fields for which I need it.   
 
 
 Do you mean it?  
  foreach ($ key as $ _POST = & gt; $ value) {resonant "$ key: $ value 
"; }   
 If you want an array of keys to repeat again, you can also use it.  
 If you want to use callback to repeat, you can also use it:  
  function test_walk (& $ value, $ key) {. .. do stuff ...} array_walk ($ arr, 'test_walk');

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