map_get($map, $key) Returns the value in a map associated with the given key. If the map doesn’t have such a key, returns
global_variable_exists($name) Check whether a variable with the given name exists in the global scope (at the top level of
selector_replace($selector, $original, $replacement) Replaces all instances of $original with $replacement
simple_selectors($selector) Returns the simple
ie_hex_str($color) Converts a color into the format understood by IE filters.
function_exists($name) Check whether a function with the given name exists.
abs($number) Returns the absolute value of a number.
to_lower_case($string) Convert a string to lower case,
length($list) Return the length of a list. This can return the number of pairs in a map as
str_index($string, $substring) Returns the index of the first occurrence of $substring in $string
Page 7 of 9