Php in_array function with example

The in_array() function is an predefined function in PHP. The in_array() function is used to check whether a given value exists in an array or not. If the value exist in the array its return true otherwise return false.


$roll_number = array(1,2,3,4,5 ); 


if (in_array("2", $roll_number)) 


  echo "found"; 



  echo "not found"; 


Warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, bool given in /www/wwwroot/ on line 13

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