(PHP >= 5.3) If filename is a directory, a LogicException will be thrown: "Cannot use SplFileObject with directories"
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
SplFileObject::__construct — Construct a new file object
$filename
,$mode
= "r",$useIncludePath
= false
,$context
= null
Construct a new file object.
filename
The file to read.
È possibile utilizzare una URL come un nome di file con questa funzione se fopen wrappers è stata abilitata. Vedere fopen() per maggiori informazioni su come specificare i nomi di file. Vedere Supported Protocols and Wrappers per i link verso le informazioni sulle capacità dei vari wrapper, note sul loro uso, informazioni sulle variabili predefinite che forniscono.
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().
Throws a RuntimeException if the filename
cannot be opened.
Throws a LogicException if the filename
is a directory.
Example #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";
}
?>
Il precedente esempio visualizzerà qualcosa simile a:
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 ?>
(PHP >= 5.3) If filename is a directory, a LogicException will be thrown: "Cannot use SplFileObject with directories"
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.