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                這些數學函數將僅處理計算機上[整數](https://www.php.net/manual/en/language.types.integer.php)和[浮點](https://www.php.net/manual/en/language.types.float.php)類型范圍內的值(當前對應于C類型的long resp。double)。如果您需要處理更大的數字,請查看[任意精度數學函數](https://www.php.net/manual/en/book.bc.php) * [預定義常量](https://www.php.net/manual/zh/math.constants.php) * [Math 函數](https://www.php.net/manual/zh/ref.math.php) * [abs](https://www.php.net/manual/zh/function.abs.php)— 絕對值 * [acos](https://www.php.net/manual/zh/function.acos.php)— 反余弦 * [acosh](https://www.php.net/manual/zh/function.acosh.php)— 反雙曲余弦 * [asin](https://www.php.net/manual/zh/function.asin.php)— 反正弦 * [asinh](https://www.php.net/manual/zh/function.asinh.php)— 反雙曲正弦 * [atan2](https://www.php.net/manual/zh/function.atan2.php)— 兩個參數的反正切 * [atan](https://www.php.net/manual/zh/function.atan.php)— 反正切 * [atanh](https://www.php.net/manual/zh/function.atanh.php)— 反雙曲正切 * [base\_convert](https://www.php.net/manual/zh/function.base-convert.php)— 在任意進制之間轉換數字 * [bindec](https://www.php.net/manual/zh/function.bindec.php)— 二進制轉換為十進制 * [ceil](https://www.php.net/manual/zh/function.ceil.php)— 進一法取整 * [cos](https://www.php.net/manual/zh/function.cos.php)— 余弦 * [cosh](https://www.php.net/manual/zh/function.cosh.php)— 雙曲余弦 * [decbin](https://www.php.net/manual/zh/function.decbin.php)— 十進制轉換為二進制 * [dechex](https://www.php.net/manual/zh/function.dechex.php)— 十進制轉換為十六進制 * [decoct](https://www.php.net/manual/zh/function.decoct.php)— 十進制轉換為八進制 * [deg2rad](https://www.php.net/manual/zh/function.deg2rad.php)— 將角度轉換為弧度 * [exp](https://www.php.net/manual/zh/function.exp.php)— 計算 e 的指數 * [expm1](https://www.php.net/manual/zh/function.expm1.php)— 返回 exp(number) - 1,甚至當 number 的值接近零也能計算出準確結果 * [floor](https://www.php.net/manual/zh/function.floor.php)— 舍去法取整 * [fmod](https://www.php.net/manual/zh/function.fmod.php)— 返回除法的浮點數余數 * [getrandmax](https://www.php.net/manual/zh/function.getrandmax.php)— 顯示隨機數最大的可能值 * [hexdec](https://www.php.net/manual/zh/function.hexdec.php)— 十六進制轉換為十進制 * [hypot](https://www.php.net/manual/zh/function.hypot.php)— 計算一直角三角形的斜邊長度 * [intdiv](https://www.php.net/manual/zh/function.intdiv.php)— 對除法結果取整 * [is\_finite](https://www.php.net/manual/zh/function.is-finite.php)— 判斷是否為有限值 * [is\_infinite](https://www.php.net/manual/zh/function.is-infinite.php)— 判斷是否為無限值 * [is\_nan](https://www.php.net/manual/zh/function.is-nan.php)— 判斷是否為合法數值 * [lcg\_value](https://www.php.net/manual/zh/function.lcg-value.php)— 組合線性同余發生器 * [log10](https://www.php.net/manual/zh/function.log10.php)— 以 10 為底的對數 * [log1p](https://www.php.net/manual/zh/function.log1p.php)— 返回 log(1 + number),甚至當 number 的值接近零也能計算出準確結果 * [log](https://www.php.net/manual/zh/function.log.php)— 自然對數 * [max](https://www.php.net/manual/zh/function.max.php)— 找出最大值 * [min](https://www.php.net/manual/zh/function.min.php)— 找出最小值 * [mt\_getrandmax](https://www.php.net/manual/zh/function.mt-getrandmax.php)— 顯示隨機數的最大可能值 * [mt\_rand](https://www.php.net/manual/zh/function.mt-rand.php)— 生成更好的隨機數 * [mt\_srand](https://www.php.net/manual/zh/function.mt-srand.php)— 播下一個更好的隨機數發生器種子 * [octdec](https://www.php.net/manual/zh/function.octdec.php)— 八進制轉換為十進制 * [pi](https://www.php.net/manual/zh/function.pi.php)— 得到圓周率值 * [pow](https://www.php.net/manual/zh/function.pow.php)— 指數表達式 * [rad2deg](https://www.php.net/manual/zh/function.rad2deg.php)— 將弧度數轉換為相應的角度數 * [rand](https://www.php.net/manual/zh/function.rand.php)— 產生一個隨機整數 * [round](https://www.php.net/manual/zh/function.round.php)— 對浮點數進行四舍五入 * [sin](https://www.php.net/manual/zh/function.sin.php)— 正弦 * [sinh](https://www.php.net/manual/zh/function.sinh.php)— 雙曲正弦 * [sqrt](https://www.php.net/manual/zh/function.sqrt.php)— 平方根 * [srand](https://www.php.net/manual/zh/function.srand.php)— 播下隨機數發生器種子 * [tan](https://www.php.net/manual/zh/function.tan.php)— 正切 * [tanh](https://www.php.net/manual/zh/function.tanh.php)— 雙曲正切
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