SplTempFileObject::__construct()

(PHP 5 >= 5.1.2, PHP 7)

Construct a new temporary file object

说明

Construct a new temporary file object.

参数

The maximum amount of memory(in bytes, default is 2 MB)for the temporary file to use. If the temporary file exceeds this size, it will be moved to a file in the system's temp directory.

If$max_memoryis negative, only memory will be used. If$max_memoryis zero, no memory will be used.

返回值

没有返回值。

错误／异常

Throws a RuntimeException if an error occurs.

范例

SplTempFileObject() example

This example writes a temporary file in memory which can be written to and read from.

以上例程的输出类似于：

Written 47 bytes to temporary file.
This is the first line
And this is the second.

参见

• SplFileObject
• PHP input/output streams(forphp://tempandphp://memory)

Noting that when the tmp file exceeds memory limitations and is written to the system temp directory, it is deleted upon completion of the script it was initially created in. At least that is what I have seen and wanted to document for others since it wasn't clear.

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