SplFileObject::__construct

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

SplFileObject::__construct — Construct 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

SplFileInfo::openFile() - Gets an SplFileObject object for the file
fopen() - Abre um arquivo ou URL

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User Contributed Notes 2 notes

down

majna ¶

7 years ago


(PHP >= 5.3) If filename is a directory, a LogicException will be thrown: "Cannot use SplFileObject with directories"

down

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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