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 fichero o una 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 fichero entero a una cadena
- include - include
- stream_context_create() - Crear un contexto de flujo
add a note
User Contributed Notes
file - [14 notes]
twichi at web dot de ¶
1 year ago
d basin ¶
3 years ago
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...
jon+spamcheck at phpsitesolutions dot com ¶
5 years ago
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 ($)
Reversed: moc dot liamg at senroc dot werdna ¶
5 years ago
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 ¶
6 years ago
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 ¶
6 years ago
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.
justin at visunet dot ie ¶
10 years ago
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 ¶
11 years ago
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 ¶
11 years ago
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().
marios88 at gmail dot com ¶
3 years ago
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];
}
?>
vbchris at gmail dot com ¶
5 years ago
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
PenguinMan98 at usa dot net ¶
5 years ago
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.
John ¶
9 years ago
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.
dir @ badblue com ¶
9 years ago
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