PHP 8.1.0 RC 4 available for testing

SplFileObject::__construct

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

SplFileObject::__constructConstruct a new file object

Descrição

public SplFileObject::__construct(
    string $filename,
    string $mode = "r",
    bool $useIncludePath = false,
    ?resource $context = null
)

Construct a new file object.

Parâmetros

filename

The file to read.

Dica

Uma URL pode ser utilizada como um nome de arquivo se fopen wrappers estiver ativo. Veja fopen() para mais detalhes em como especificar o filename. Veja também the Protocolos e Wrappers suportados para informações sobre que capacidades cada wrapper tem, notas de uso e informações sobre variáveis predefinidas fornecidas.

mode

The mode in which to open the file. See fopen() for a list of allowed modes.

useIncludePath

Whether to search in the include_path for filename.

context

A valid context resource created with stream_context_create().

Valor Retornado

Não há valor retornado.

Erros

Throws a RuntimeException if the filename cannot be opened.

Throws a LogicException if the filename is a directory.

Exemplos

Exemplo #1 SplFileObject::__construct() example

This example opens the current file and iterates over its contents line by line.

<?php
$file 
= new SplFileObject(__FILE__);
foreach (
$file as $line_num => $line) {
    echo 
"Line $line_num is $line";
}
?>

O exemplo acima irá imprimir algo similar à:

Line 0 is <?php
Line 1 is $file = new SplFileObject(__FILE__);
Line 2 is foreach ($file as $line_num => $line) {
Line 3 is     echo "Line $line_num is $line";
Line 4 is }
Line 5 is ?>

Veja Também

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User Contributed Notes 2 notes

up
1
majna
7 years ago
(PHP >= 5.3) If filename is a directory, a LogicException will be thrown: "Cannot use SplFileObject with directories"
up
0
KEINOS at blog.keinos.com
4 years ago
When using URL as a filename, such as "http://..." or "php://stdin", and also have the fopen wappers on, and you get a 'RuntimeException' error, try using "NoRewindIterator" class to a SplFileObject instance.

<?php
$url
= 'http://sample.com/data.csv';
$file = new NoRewindIterator( new SplFileObject( $url ) );
foreach (
$file as $line_num => $line) {
    echo
"Line $line_num is $line";
}
?>

While opening a file, a rewind method will be called, but these URL iterators cannot be rewind, so you'll get a "Fatal error: Uncaught exception 'RuntimeException' with message 'Cannot rewind file ...'" error.
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