SplTempFileObject::__construct
(PHP 5 >= 5.1.2)
SplTempFileObject::__construct — Construct a new temporary file object
Description
public SplTempFileObject::__construct
([ int
$max_memory
] )Construct a new temporary file object.
Parameters
-
max_memory -
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. Ifmax_memoryis zero, no memory will be used.
Return Values
No value is returned.
Errors/Exceptions
Throws a RuntimeException if an error occurs.
Examples
Example #1 SplTempFileObject() example
This example writes a temporary file in memory which can be written to and read from.
<?php
$temp = new SplTempFileObject();
$temp->fwrite("This is the first line\n");
$temp->fwrite("And this is the second.\n");
echo "Written " . $temp->ftell() . " bytes to temporary file.\n\n";
// Rewind and read what was written
$temp->rewind();
foreach ($temp as $line) {
echo $line;
}
?>
The above example will output something similar to:
Written 47 bytes to temporary file. This is the first line And this is the second.
Коментарии
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.