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Returns 1 (or C) if A <= B or 0 (or D) if not. Parameters C and D are optional.
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如果 A <= B，則返回 1（或 C），否則返回 0（或 D）。參數 C 和 D 是可選的。
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Addition
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加法
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Mathematical Operation to return the sum of two or more summands
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數學運算，返回兩個或多個求和之和
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Subtraction
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減法
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Mathematical Operation to return the difference of minuend and subtrahend
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返回 minuend 和 subtrahend 之差的數學運算
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Multiplication
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分堂
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Mathematical Operation to return the product of multiplier and multiplicant
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返回乘數和被乘數乘積的數學運算
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Division
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部門
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Mathematical Operation to return the fraction of divident and divisor
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返回被除數和除數分數的數學運算
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Modulus
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模
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Mathematical Operation to return the remainder of a division of two integers
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數學運算，返回兩個整數的除法的餘數
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Exponentiation - PHP5.6 or above required
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冪運算 - 需要 PHP5.6 或以上
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Mathematical Operation to return the repeated multiplication (or division) of a base by its exponent.
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Mathematical Operation 返回底數乘以指數的重複乘法（或除法）。
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Decimal Mark
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小數點
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Decimal Mark used to separate the integer part from the fractional part
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用於將整數部分與小數部分分開的小數點
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Round Bracket
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圓括弧
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Used to override normal precedence or to mark the first level of nesting
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用於覆蓋正常優先順序或標記第一級嵌套
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Square Bracket
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方括弧
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Used to override normal precedence or to mark the second level of nesting
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用於覆蓋正常優先順序或標記第二級嵌套
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Punctuation mark
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標點符號
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