SymfonyWorld Online 2022 Winter Edition

SplTempFileObject::__construct

(PHP 5 >= 5.1.2, PHP 7, PHP 8)

SplTempFileObject::__constructConstruct a new temporary file object

Description

public SplTempFileObject::__construct(int $maxMemory = 2 * 1024 * 1024)

Construct a new temporary file object.

Parameters

maxMemory

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

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.

See Also

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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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