SplTempFileObject::__construct

(PHP 5 >= 5.1.2)

SplTempFileObject::__constructConstruct a new temporary file object

Опис

public SplTempFileObject::__construct ([ int $max_memory ] )

Construct a new temporary file object.

Параметри

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_memory is negative, only memory will be used. If max_memory is zero, no memory will be used.

Значення, що повертаються

Не повертає значень.

Помилки/Винятки

Throws a RuntimeException if an error occurs.

Приклади

Приклад #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;
}
?>

Наведений вище приклад виведе щось подібне до:

Written 47 bytes to temporary file.

This is the first line
And this is the second.

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User Contributed Notes 1 note

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14
larry dot laski at gmail dot com
7 years ago
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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