(PHP 5 >= 5.3.0, PHP 7) Compare priorities in order to place elements correctly in the heap while sifting

(PHP 5 >= 5.3.0, PHP 7) Sets a new value at a specified index

(PHP 5 >= 5.1.2, PHP 7) Gets an SplFileInfo object for the path

(PHP 5 >= 5.1.0, PHP 7) Read next line public

(PHP 5 >= 5.1.0, PHP 7) Write to file public

(PHP 5 >= 5.2.2, PHP 7) Unserializes a storage from its string representation

(PHP 5 >= 5.1.0, PHP 7) Receive update from subject

(PHP 5 >= 5.0.0, PHP 7) Sets the value at the specified index to newval

(PHP 5 >= 5.3.0, PHP 7) Extracts a node from top of the heap and sift up.

(PHP 5 >= 5.3.0, PHP 7) Return current array entry