php - Can we use one logic expression to compare multiple strings at once? -


i'm trying find simpler way check 1 var not equal multiple values in 1 comparison string.

i found can reduce code empty() not == string values.

empty() example validate concept. 

if (empty($var_1 . $var_2 . $var_3) { echo 'all these vars empty, run code...'; }

the above checks if $var_1, $var_2 , $var_3 empty.

but there way run similar when using !== ?

see code explanation below... 

test('unknown_value'); echo php_eol; test('value_1');  function test($var = '') {      // below method ideal...      // if ($var !== 'value_1' . 'value_2' . 'value_3') {      // below method 2nd ideal      // if ($var !== 'value_1' , 'value_2' , 'value_3') {      // have write below...     // i'm looking way not have write $var !== each comparison since not equal      if ($var !== 'value_1' , $var !== 'value_2' , $var !== 'value_3') {          echo 'failed!!!';      }      elseif ($var == 'value_1' or $var == 'value_2' or $var == 'value_3') {          echo 'accessed!!!';      }  }

use in_array, so:

if (in_array(trim($somevariable), [ 'this', 'that', 'the other'] )) {     // $somevariable 1 of elements in array }

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