PHP Dateioperationen
Dateityp für die Ausgabe bestimmen
Dateityp CSV
header('Content-Type: text/csv; charset=UTF-8');
echo $myCSV;
exit;
Dateityp XML
header('Content-Type: text/xml; charset=UTF-8');
echo $myXML;
exit;
Dateityp PDF ausgeben
// PDF Datei ausgeben
header('Content-type: application/pdf');
// wird downloaded.pdf benannt
header('Content-Disposition: attachment; filename="downloaded.pdf"');
// originale Datei heißt
readfile('original.pdf');
Dateien einlesen
Dateien nach Muster suchen
//find
$files = glob('../images/a*.jpg');
// applies the function to each array element
$files = array_map('realpath',$files);
print_r($files);
/* output looks like:
Array
(
[0] => C:\wamp\www\images\apple.jpg
[1] => C:\wamp\www\images\art.jpg
)
*/
Einlesen Standard
//read
$handle = fopen ('./typo3conf/localconf.php', 'r');
while (!feof($handle)) {
$buffer = fgets($handle, 4096);
echo $buffer;
}
fclose ($handle);
Einlesen einfach
//read
$file = PATH_site.'fileadmin/content/myfile.txt';
$fileContent = @file_get_contents($file);
Einlesen einer URL
$service = "http://mydomain.de/?var=".$var;
if ($var.length != 0 ){
//Remote-Auslesung der oben definierten Service-Adresse
$result = @file($service);
}
Dateien schreiben
Schreiben Standard
//write
$handle1 = fopen("headlines.txt", "w+");
fwrite($handle1, $headline."\n".$handle0);
fclose($handle1);
Schreiben einfach
// write
$file = PATH_site.'fileadmin/content/myfile.txt';
$content = 'content';
@file_put_contents($file,$content,LOCK_EX);
Datei kopieren und löschen
Datei kopieren
copy($fileSource,$fileDestination);
Datei löschen
unlink($file);
Beispiel für den Upload von Daten
// copies an jpg (internal or external url) to internal imgPath, deletes the original image if internal
if(!empty($image)) {
// copies the image
copy($image,$this->imgPath.md5($image).'.jpg');
// deletes the source image (if internal)
if($isInternal) {
unlink($image);
}
}
Dateien hochladen
Upload-Funktion
/**
* @author Markus Brunner
* @date 20110209
* @comment Uploads a file
*
* @html <form action="url.php" enctype="multipart/form-data" method="post"><input id="uploaded_file" name="uploaded_file" type="file" /><input type="submit" value="upload file" /></form>
* @php $uploadResult = uploadFormFiles(array('uploaded_file'));
*
* @param array $uploadNames Array of all Form > input[type="file"] > name e.g. array('uploaded_file')
* @param boolean $uploadIfExists Boolean: upload file although file with same name already exists in upload folder if true; default: false
* @param boolean $replaceExisting Boolean: deletes existing files with same filename if true; default: false
* @param int $allowedFileSize Int of Maximum of Filesize in Byte e.g. 524288 for 0,5 MB
* @param String $uploadPath String of Upload Path relative to this file e.g. 'upload/' - folder must exist!
* @param array $allowedFileTypes Array of all allowed file types e.g. for standard images array('image/jpeg','image/jpg','image/gif','image/png')
* @return array Array of uploaded files
* name
* type
* tmp_name
* error
* errorType
* size
* uploadFileName
*/
function uploadFormFiles(Array $uploadNames, $uploadIfExists = false, $replaceExisting = false, $uploadPath = 'upload/', $allowedFileSize = 524288, Array $allowedFileTypes = array('image/jpeg','image/jpg','image/gif','image/png')) {
$result = array();
foreach($uploadNames AS $uploadName) {
# upload config
$uploadFile = $_FILES[$uploadName];
$uploadFile['uploadFileName'] = $uploadPath.basename($uploadFile['name']);
$uploadFileExists = file_exists($uploadFile['uploadFileName']);
# delete file if $uploadIfExists && $replaceExisting
if($uploadFileExists && $uploadIfExists && $replaceExisting) {
if(!(unlink($uploadFile['uploadFileName']))) {
$uploadFile['error'] = 1;
$uploadFile['errorType'] = 'error deleting file';
}
}
# upload file with timestamp suffix if $uploadIfExists && NOT $replaceExisting
else if($uploadFileExists && $uploadIfExists && !$replaceExisting) {
$temp_uploadFileName = substr($uploadFile['name'], 0, strrpos($uploadFile['name'], '.')).'_'.date('U').substr($uploadFile['name'], strrpos($uploadFile['name'], '.'), strlen($uploadFile['name']));
$uploadFile['name'] = $temp_uploadFileName;
$uploadFile['uploadFileName'] = $uploadPath.basename($temp_uploadFileName);
}
# check if file exists
if(empty($uploadFile['error']) && !$uploadIfExists && $uploadFileExists) {
$uploadFile['error'] = 1;
$uploadFile['errorType'] = 'file exists already';
}
# check upload size
if(empty($uploadFile['error']) && $uploadFile['size'] > (int) $allowedFileSize) {
$uploadFile['error'] = 1;
$uploadFile['errorType'] = 'file too big';
}
# check upload file type
if(empty($uploadFile['error']) && !(in_array($uploadFile['type'], $allowedFileTypes))) {
$uploadFile['error'] = 1;
$uploadFile['errorType'] = 'wrong file type';
}
# upload file
if(empty($uploadFile['error']) && !(move_uploaded_file($uploadFile['tmp_name'], $uploadFile['uploadFileName']))) {
$uploadFile['error'] = 1;
$uploadFile['errorType'] = 'upload crashed';
}
$result[] = $uploadFile;
}
return $result;
}
Dateien konvertieren
PHP Native Methode
geht leider nicht immer!
string mb_detect_encoding ( string $str [, mixed $encoding_list = mb_detect_order() [, bool $strict = false ]] )
==P=HP Funktion zur Überprüfung, ob UTF-8; NO 1===
// Returns true if $string is valid UTF-8 and false otherwise.
function is_utf8($string) {
// From http://w3.org/International/questions/qa-forms-utf-8.html
return preg_match('%^(?:
\x09\x0A\x0D\x20-\x7E # ASCII
| \xC2-\xDF\x80-\xBF # non-overlong 2-byte
| \xE0\xA0-\xBF\x80-\xBF # excluding overlongs
| \xE1-\xEC\xEE\xEF\x80-\xBF{2} # straight 3-byte
| \xED\x80-\x9F\x80-\xBF # excluding surrogates
| \xF0\x90-\xBF\x80-\xBF{2} # planes 1-3
| \xF1-\xF3\x80-\xBF{3} # planes 4-15
| \xF4\x80-\x8F\x80-\xBF{2} # plane 16
)*$%xs', $string);
} // function is_utf8
PHP Funktion zur Überprüfung, ob UTF-8; NO 2
function is_utf8($str) {
$c=0; $b=0;
$bits=0;
$len=strlen($str);
for($i=0; $i<$len; $i++){
$c=ord($str[$i]);
if($c > 128){
if(($c >= 254)) return false;
elseif($c >= 252) $bits=6;
elseif($c >= 248) $bits=5;
elseif($c >= 240) $bits=4;
elseif($c >= 224) $bits=3;
elseif($c >= 192) $bits=2;
else return false;
if(($i+$bits) > $len) return false;
while($bits > 1){
$i++;
$b=ord($str[$i]);
if($b < 128 || $b > 191) return false;
$bits--;
}
}
}
return true;
}
PHP Funktion zur Überprüfung, ob UTF-8; NO 3
// utf8 encoding validation developed based on Wikipedia entry at:
// http://en.wikipedia.org/wiki/UTF-8
//
// Implemented as a recursive descent parser based on a simple state machine
// copyright 2005 Maarten Meijer
//
// This cries out for a C-implementation to be included in PHP core
function valid_1byte($char) {
if(!is_int($char)) return false;
return ($char & 0x80) == 0x00;
}
function valid_2byte($char) {
if(!is_int($char)) return false;
return ($char & 0xE0) == 0xC0;
}
function valid_3byte($char) {
if(!is_int($char)) return false;
return ($char & 0xF0) == 0xE0;
}
function valid_4byte($char) {
if(!is_int($char)) return false;
return ($char & 0xF8) == 0xF0;
}
function valid_nextbyte($char) {
if(!is_int($char)) return false;
return ($char & 0xC0) == 0x80;
}
function valid_utf8($string) {
$len = strlen($string);
$i = 0;
while( $i < $len ) {
$char = ord(substr($string, $i++, 1));
if(valid_1byte($char)) { // continue
continue;
} else if(valid_2byte($char)) { // check 1 byte
if(!valid_nextbyte(ord(substr($string, $i++, 1))))
return false;
} else if(valid_3byte($char)) { // check 2 bytes
if(!valid_nextbyte(ord(substr($string, $i++, 1))))
return false;
if(!valid_nextbyte(ord(substr($string, $i++, 1))))
return false;
} else if(valid_4byte($char)) { // check 3 bytes
if(!valid_nextbyte(ord(substr($string, $i++, 1))))
return false;
if(!valid_nextbyte(ord(substr($string, $i++, 1))))
return false;
if(!valid_nextbyte(ord(substr($string, $i++, 1))))
return false;
} // goto next char
}
return true; // done
}
PHP Funktion zur Überprüfung, ob ISO Latin 1
function IsLatin1($str) {
return (preg_match("/^\\x00-\\xFF*$/u", $str) === 1);
}
Verzeichnisse erstellen
/**
* make a dir
*
* @param string $dirName
* @param int $rights=0777
*/
function mkdir_r($dirName, $rights=0777)
{
$dirs = explode('/', $dirName);
$dir='';
foreach ($dirs as $part)
{
$dir.=$part.'/';
if (!is_dir($dir) && strlen($dir)>0)
mkdir($dir, $rights);
}
}
Wiki-Datei des Artikels herunterladen
