PHP is so weird, in_array (), Strpos,

PHP in a character to find another string, whether there is a strpos, this function usage, often many people use the inverse, the correct usage is Strpos (string,search), the front is the original string, followed by the original string to query the string, and in the array, This is the opposite, such as In_array (), in an array to find an element, the use of In_array (search, Array ()), the front of the element to find, followed by the search array, it is easy to mistake!

PHP is so weird, in_array (), Strpos,