The mysql_fetch_row function returns a row from a recordset as a numeric array.
函数的作用是：从结果集中取得一行作为数值型数组。
This function returns a numeric array on success, or FALSE on failure or when there are no more rows.
如果函数成功执行，将返回一个数值型数组；如果执行失败或没有任何结果返回将返回False。
You'll want an array that assigns face values to their numeric descriptions.
您将需要一个把牌面值指定为数字描述的数组。
That module allows programmers to treat a string as an array of letters, either as numeric codes or as one-character strings. An example from the documentation.
该模块允许程序员将字符串当作字符数组对待，或者作为数字代码或者作为单字符字符串。
The value, string or numeric, is then stored in a two-dimensional array, which is returned to the calling routine after the whole sheet has been read.
然后，值(字符串或数值)存储到一个二维数组中，读取完整个工作表之后，该数组被返回给调用例程。
This speedup is due to the fact that the array is a fixed size, not a variable-sized one like the default PHP one is, and that non-numeric indexes are not allowed.
造成这种速度优势的原因是数组是固定大小的，而默认的PHP 数组是可变大小的，并且不允许非数值型索引。
For example, I could define an Array and then inadvertently attempt to do something numeric with it, or even some String concatenation, shown in Listing 7.
例如，先定义Array然后无意中尝试用于进行一些数字操作，甚至是一些string级联，如清单7所示。
Tip: The returned array will have numeric keys, starting at 0 and increase by 1.
提示：返回的数组将拥有数值键，从0开始以基数1递增。
For a numeric or string value being concatenated to the new array, only the value is copied.
把一个数值或字串值串连到新阵列时，只有值会复制过去。
Converts the numeric value of each element of a specified array of bytes to its equivalent hexadecimal string representation.
将指定的字节子数组的每个元素的数值转换为它的等效十六进制字符串表示形式。
Converts the numeric value of each element of a specified array of bytes to its equivalent hexadecimal string representation.
将指定的字节子数组的每个元素的数值转换为它的等效十六进制字符串表示形式。
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