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: http://oit.cmc.msu.ru/php/function.count.html
Дата изменения: Sun Feb 3 22:34:23 2002 Дата индексирования: Mon Oct 1 20:56:42 2012 Кодировка: |
Returns the number of elements in var, which is typically an array (since anything else will have one element).
If var is not an array, 1 will be returned (exception: count(NULL) equals 0).
Warning |
count() may return 0 for a variable that isn't set, but it may also return 0 for a variable that has been initialized with an empty array. Use isset() to test if a variable is set. |
Please see the Arrays section of the manual for a detailed explanation of how arrays are implemented and used in PHP.
See also is_array(), isset(), and strlen().