compression GZIP en PHP

Question

J'ai un script php qui sauvegarde ma table au format .sql et je veux enregistrer le fichier au format gzip en utilisant PHP. Comment puis je faire ça.

Answer 1

Vous pouvez également utiliser a filter. De la page de manuel:

<?php 
$params = array('level' => 6, 'window' => 15, 'memory' => 9); 

$original_text = "You SQL queries here..."; 

$fp = fopen('yourfile.sql.gz', 'w'); 
stream_filter_append($fp, 'zlib.deflate', STREAM_FILTER_WRITE, $params); 
fwrite($fp, $original_text); 
fclose($fp); 
?> 

Answer 2

Utilisez les fonctions Zlib.

Lire la documentation pour plus de détails

Un exemple pris directement à partir de la page liée:

<?php 

$filename = tempnam('/tmp', 'zlibtest') . '.gz'; 
$s = "Only a test, test, test, test, test, test, test, test!\n"; 

/***** WRITING THE FILE *****/ 
// open file for writing with maximum compression 
$zp = gzopen($filename, "w9"); 

// write string to file 
gzwrite($zp, $s); 

// close file 
gzclose($zp); 

/***** READING IT *****/ 
// open file for reading 
$zp = gzopen($filename, "r"); 

// read 3 char 
echo gzread($zp, 3); 

// output until end of the file and close it. 
gzpassthru($zp); 
gzclose($zp); 


/***** ANOTHER WAY TO READ (and print) IT *****/ 
// open file and print content (the 2nd time). 
if (readgzfile($filename) != strlen($s)) { 
     echo "Error with zlib functions!"; 
} 
?> 

Hope qui aide.

Answer 3

Voici une autre solution qui prend essentiellement en idée Carlos Lima:

<?php 
    ob_start(); /* start buffering */ 
    echo "your cvs or sql output!";  
    $content = ob_get_contents(); /* get the buffer */ 
    ob_end_clean(); 
    $content = gzencode($content, 9);  
    header("Content-Type: application/force-download"); 
    header("Content-Type: application/octet-stream"); 
    header("Content-Type: application/download"); 
    header("Content-Description: Download SQL Export"); 
    header('Content-Disposition: attachment; filename=test.txt.gz'); 
    echo $content; 
    die(); 
?>