file_put_contents
read from CSV data (file) into an array with named keys
... with or without 1st row = header (keys)
(see 4th parameter of function call as true / false)
<?php
// --------------------------------------------------------------
function csv_in_array($url,$delm=";",$encl="\"",$head=false) {
$csvxrow = file($url); // ---- csv rows to array ----
$csvxrow[0] = chop($csvxrow[0]);
$csvxrow[0] = str_replace($encl,'',$csvxrow[0]);
$keydata = explode($delm,$csvxrow[0]);
$keynumb = count($keydata);
if ($head === true) {
$anzdata = count($csvxrow);
$z=0;
for($x=1; $x<$anzdata; $x++) {
$csvxrow[$x] = chop($csvxrow[$x]);
$csvxrow[$x] = str_replace($encl,'',$csvxrow[$x]);
$csv_data[$x] = explode($delm,$csvxrow[$x]);
$i=0;
foreach($keydata as $key) {
$out[$z][$key] = $csv_data[$x][$i];
$i++;
}
$z++;
}
}
else {
$i=0;
foreach($csvxrow as $item) {
$item = chop($item);
$item = str_replace($encl,'',$item);
$csv_data = explode($delm,$item);
for ($y=0; $y<$keynumb; $y++) {
$out[$i][$y] = $csv_data[$y];
}
$i++;
}
}
return $out;
}
// --------------------------------------------------------------
?>
fuction call with 4 parameters:
(1) = the file with CSV data (url / string)
(2) = colum delimiter (e.g: ; or | or , ...)
(3) = values enclosed by (e.g: ' or " or ^ or ...)
(4) = with or without 1st row = head (true/false)
<?php
// ----- call ------
$csvdata = csv_in_array( $yourcsvfile, ";", "\"", true );
// -----------------
// ----- view ------
echo "<pre>\r\n";
print_r($csvdata);
echo "</pre>\r\n";
// -----------------
?>
PS: also see: http://php.net/manual/de/function.fgetcsv.php to read CSV data into an array
... and other file-handling methods
^
file
(PHP 4, PHP 5)
file — Transfiere un fichero completo a un array
Descripción
array file
( string
$filename
[, int $flags = 0
[, resource $context
]] )Transfiere un fichero completo a un array.
Nota:
Puede usar file_get_contents() para devolver el contenido de un fichero como una cadena.
Parámetros
-
filename -
Ruta del fichero.
SugerenciaSe puede usar una dirección URL como nombre de archivo con esta función si los fopen wrappers han sido activados. Consulte fopen() para más información de como especificar el nombre de fichero. Consulte Protocolos y Envolturas soportados para ver enlaces con información sobre las diferentes habilidades que los wrappers tienen, notas de uso e información de cualquier variables predefinidas que pueden usarse.
-
flags -
El parámetro opcional
flagspuede ser una, o más, de las siguientes constantes:-
FILE_USE_INCLUDE_PATH - Busca el fichero en include_path.
-
FILE_IGNORE_NEW_LINES - No se añade nueva línea al final de cada elemento del array
-
FILE_SKIP_EMPTY_LINES - Salta las líneas vacías
-
-
context -
Un recurso de contexto válido creado con la función stream_context_create().
Nota: Soporte para context fue añadido en PHP 5.0.0. Para una descripción de contexts, refiérase a Flujos.
Valores devueltos
Devuelve el fichero a un array. Cada elemento del array se corresponde con una
línea del fichero, con el carácter nueva línea aún adjunto. Si falla,
file() devuelve FALSE.
Nota:
Cada línea del array resultante incuirá el final de línea, a menos que se use
FILE_IGNORE_NEW_LINES, por lo que aún necesita utilizar rtrim() si no quiere que el final de línea esté presente.
Nota: Si sufre problemas con PHP no reconociendo los finales de línea cuando lee o crea ficheros en Macintosh, puede probar de activar la opción de configuración en tiempo de ejecución auto_detect_line_endings para intentar resolver el problema.
Historial de cambios
| Versión | Descripción |
|---|---|
| 5.0.0 |
Se añadió el parámetro context
|
| 5.0.0 |
Antes de PHP 5.0.0 el parámetro flags sólo
cubría include_path y estaba
habilitado con 1
|
| 4.3.0 | file() ahora es segura al trabajar con datos binarios |
Ejemplos
Ejemplo #1 Ejemplo de file()
<?php
// Escribe un fichero en un array. En este ejemplo iremos a través de HTTP para
// obtener el código fuente HTML de una URL.
$líneas = file('http://www.example.com/');
// Recorre nuestro array, muestra el código fuente HTML como tal
// y muestra tambíen los números de línea.
foreach ($líneas as $num_línea => $línea) {
echo "Línea #<b>{$num_línea}</b> : " . htmlspecialchars($línea) . "<br />\n";
}
// Otro ejemplo, vamos a escribir una página web en una cadena. Vea también file_get_contents().
$html = implode('', file('http://www.example.com/'));
// Usando el parámetro opcional banderas a partir de PHP 5
$recortes = file('fichero.txt', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
?>
Notas
Advertencia
Cuando se usa SSL, Microsoft IIS violará el protocolo, cerrando la conexión sin mandar un indicador close_notify. PHP avisará de esto con este mensaje "SSL: Fatal Protocol Error", cuando llegue al final de los datos. Una solución a este problema es bajar el nivel de aviso de errores del sistema para que no incluya advertencias. PHP 4.3.7 y versiones posteriores detectan servidores IIS con este problema cuando se hace streaming usando https:// y suprime la advertencia. Si usáis la función fsockopen() para crear un socket ssl://, tendréis que suprimir la advertencia explicitamente.
Ver también
- readfile() - Realizar la salida de un fichero
- fopen() - Abre un archivo o URL
- fsockopen() - Abre una conexión vía sockets a Internet o a un dominio Unix
- popen() - Abre un proceso de un puntero a un archivo
- file_get_contents() - Transmite un archivo entero a una cadena
- include - include
- stream_context_create() - Crear un contexto de flujo
add a note
User Contributed Notes
file
twichi at web dot de
13-Sep-2011 12:33
marios88 at gmail dot com
06-Feb-2010 02:59
Quick and easy way to reverse read a file without array_reverse
<?php
$myfile = 'test.txt';
$lines = file($myfile);
for($i=count($lines);$i>0;$i--){
echo $lines[$i];
}
?>
d basin
14-Oct-2009 03:47
this may be obvious, but it took me a while to figure out what I was doing wrong. So I wanted to share. I have a file on my "c:\" drive. How do I file() it?
Don't forget the backslash is special and you have to "escape" the backslash i.e. "\\":
<?php
$lines = file("C:\\Documents and Settings\\myfile.txt");
foreach($lines as $line)
{
echo($line);
}
?>
hope this helps...
PenguinMan98 at usa dot net
21-Apr-2008 03:49
on file() and flock()
My supervisor came up with a brilliant plan to workaround the inability of the file() to work on a flock()'ed file.
We created a dummy file called lockfile.txt. We would flock() lockfile.txt. Once we had a lock on it, we used file() on the file we wanted to read, then altered the file and called fclose on both files.
jon+spamcheck at phpsitesolutions dot com
16-Apr-2008 01:03
A user suggested using rtrim always, due to the line ending conflict with files that have an EOL that differs from the server EOL.
Using rtrim with it's default character replacement is a bad solution though, as it removes all whitespace in addition to the '\r' and '\n' characters.
A good solution using rtrim follows:
<?php
$line = rtrim($line, "\r\n") . PHP_EOL;
?>
This removes only EOL characters, and replaces with the server's EOL character, thus making preg_* work fine when matching the EOL ($)
vbchris at gmail dot com
16-Feb-2008 01:15
If you're getting "failed to open stream: Permission denied" when trying to use either file() or fopen() to access files on another server. Check your host doesn't have any firewall restrictions in-place which prevent outbound connections. This is the case with my host Aplus.net
Reversed: moc dot liamg at senroc dot werdna
12-Jul-2007 02:25
This note applies to PHP 5.1.6 under Windows (although may apply to other versions).
It appears that the 'FILE_IGNORE_NEW_LINES' flag doesn't remove newlines properly when reading Windows-style text files, i.e. files whose lines end in '\r\n'.
Solution: Always use 'rtrim()' in preference to 'FILE_IGNORE_NEW_LINES'.
info at carstanje dot com
28-Nov-2006 12:33
Using file() for reading large text files > 10 Mb gives problems, therefore you should use this instead. It is much slower but it works fine. $lines will return an array with all the lines.
<?php
$handle = @fopen('yourfile...', "r");
if ($handle) {
while (!feof($handle)) {
$lines[] = fgets($handle, 4096);
}
fclose($handle);
}
?>
richardtcunningham at gmail dot com
11-Jul-2006 02:19
justin at visunet dot ie's note of 20-Mar-2003 states
"Note: Now that file() is binary safe it is 'much' slower than it used to be. If you are planning to read large files it may be worth your while using fgets() instead of file()."
I tested fgets(), file_get_contents(), and file() on PHP 4.3.2 and PHP 5 and timed each to be under a second with over 200,000 lines. I do not know if he was testing extremely long lines or what, but I could not duplicate the difference that he mentioned.
jonathan dot gotti at free dot fr
01-Feb-2006 02:52
you can use
$file = array_map('rtrim',file('myfile.txt'));
to remove annoying ending lines of the resulting array.
Nuts
18-Jan-2006 03:16
WARNING ON WINDOWS:
file() function will add "\r\n" in to the end of the row, even if you use only "\n" char to make rows in the file!
On UNIX systems there is no such problem.
dir @ badblue com
12-Sep-2003 02:48
Jeff's array2file function is a good start; here are a couple of improvements (no possibility of handle leak when fwrite fails, additional capability of both string2file and array2file; presumably faster performance through use of implode).
<?php
function String2File($sIn, $sFileOut) {
$rc = false;
do {
if (!($f = fopen($sFileOut, "wa+"))) {
$rc = 1; break;
}
if (!fwrite($f, $sIn)) {
$rc = 2; break;
}
$rc = true;
} while (0);
if ($f) {
fclose($f);
}
return ($rc);
}
function Array2File($aIn, $sFileOut) {
return (String2File(implode("\n", $aIn), $sFileOut));
}
?>
If you're generating your string text using a GET or POST from a TEXTAREA (e.g., a mini-web-text-editor), remember that strip_slashes and str_replace of "/r/n" to "/n" may be necessary as well using these functions.
HTH --dir @ badblue com
John
20-Jul-2003 04:32
after many months of confusion and frustration, i have finally figured out something that i should have noticed the first time around.
you can't file("test.txt") when that same file has been flocked. i guess i didn't have a full understanding of what i was doing when i used flock(). all i had to do was move the flock() around, and all was well.
justin at visunet dot ie
20-Mar-2003 09:36
Note: Now that file() is binary safe it is 'much' slower than it used to be. If you are planning to read large files it may be worth your while using fgets() instead of file() For example:
<?php
$fd = fopen ("log_file.txt", "r");
while (!feof ($fd))
{
$buffer = fgets($fd, 4096);
$lines[] = $buffer;
}
fclose ($fd);
?>
The resulting array is $lines.
I did a test on a 200,000 line file. It took seconds with fgets() compared to minutes with file().
andrea at brancatelli dot it
16-Mar-2002 11:16
file() has a strange behaviour when reading file with both \n and \r as line delimitator (DOS files), since it will return an array with every single line but with just a \n in the end. It seems like \r just disappears.
This is happening with PHP 4.0.4 for OS/2. Don't know about the Windows version.
php@don't_spam_me
09-Feb-2002 12:56
It appears that the file() function causes file access problems for perl cgi scripts accessing the same files. I am using Perl v5.6.0 in linux with PHP/4.0.4pl1. After running a php app using the file() function, any perl cgi trying to access the same file randomly dies returning an internal server error: premature end of script headers.
The simple fix is to use fopen(), fgets() and fclose() instead of file().