php - $_POST['hidd'] != '20' doesnt work correctly -

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I just want to execute some code in "if": if ($ _POST ['hidd']! = '20') $ _POST works correctly but the problem is ! = '20' is in. How can i work it

Try this: 

  if (isset ($ _ POST) ['hidd']) & amp; $ _POST ['hidd']! = '20') {// your code}

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