PHP Array Constants

Array Constants

• CASE_LOWER
  Used with array_change_key_case() to convert array keys to lower case
• CASE_UPPER
  Used with array_change_key_case() to convert array keys to upper case
• SORT_ASC
  Used with array_multisort() to sort in ascending order
• SORT_DESC
  Used with array_multisort() to sort in descending order
• SORT_REGULAR
  Used to compare items normally
• SORT_NUMERIC
  Used to compare items numerically
• SORT_STRING
  Used to compare items as strings
• SORT_LOCALE_STRING
  Used to compare items as strings, based on the current locale
• COUNT_NORMAL
• COUNT_RECURSIVE
• EXTR_OVERWRITE
• EXTR_SKIP
• EXTR_PREFIX_SAME
• EXTR_PREFIX_ALL
• EXTR_PREFIX_INVALID
• EXTR_PREFIX_IF_EXISTS
• EXTR_IF_EXISTS
• EXTR_REFS

PHP Array Functions