fast way to check if element is in sql value code example

Example 1: php check if item in array

$allowedFileType = ['application/vnd.ms-excel','text/xls','text/xlsx','application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'];
  
if(in_array($_FILES["file"]["type"],$allowedFileType))

Example 2: python check if value in string

def is_value_in_string(value: str, the_string: str):
    return value in the_string.lower()