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update : 2015.11.03
php.shukuma.com검색:
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trader_acos(PECL trader >= 0.2.0) trader_acos — Vector Trigonometric ACos 설명
array trader_acos
( array
$real
)
Calculates the arc cosine for each value in
인수
반환값Returns an array with calculated data or false on failure. |