English Chinese (Simplified)
Addition 加法
Mathematical Operation to return the sum of two or more summands 数学运算，返回两个或多个求和之和
Subtraction 减法
Mathematical Operation to return the difference of minuend and subtrahend 返回 minuend 和 subtrahend 之差的数学运算
Multiplication 乘法
Mathematical Operation to return the product of multiplier and multiplicant 返回乘数和被乘数乘积的数学运算
Division 部门
Mathematical Operation to return the fraction of divident and divisor 返回被除数和除数分数的数学运算
Modulus 模
Mathematical Operation to return the remainder of a division of two integers 数学运算，返回两个整数的除法的余数
Exponentiation - PHP5.6 or above required 幂运算 - 需要 PHP5.6 或以上
Mathematical Operation to return the repeated multiplication (or division) of a base by its exponent. Mathematical Operation 返回底数乘以指数的重复乘法（或除法）。
Decimal Mark 小数点
Decimal Mark used to separate the integer part from the fractional part 表示整数部分结束和小数部分开头的符号
Round Bracket 圆括号
Used to override normal precedence or to mark the first level of nesting 用于覆盖正常优先级或标记第一级嵌套
Square Bracket 方括号
Used to override normal precedence or to mark the second level of nesting 用于覆盖正常优先级或标记第二级嵌套
Punctuation mark 标点符号
Used to separate arguments forwarded to a function 用于分隔转发给函数的参数