PHP常用代码
Hash passwords with salts
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// Déclaration des constantes
define('PREFIX_SALT', 'bonjour');
define('SUFFIX_SALT', 'aurevoire');
$hashSecure = md5(PREFIX_SALT.'m0tDePasse'.SUFFIX_SALT);
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HP Database Config
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$dbhost = '127.0.0.1';
$dbuser = 'root';
$dbpass = '';
$dbname = 'directory';
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Simple PHP Math Image Captcha
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// captcha width
$captcha_w = 150;
// captcha height
$captcha_h = 50;
// minimum font size; each operation element changes size
$min_font_size = 12;
// maximum font size
$max_font_size = 18;
// rotation angle
$angle = 20;
// background grid size
$bg_size = 13;
// path to font - needed to display the operation elements
$font_path = 'fonts/courbd.ttf';
// array of possible operators
$operators=array('+','-','*');
// first number random value; keep it lower than $second_num
$first_num = rand(1,5);
// second number random value
$second_num = rand(6,11);
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ZIP File PHP code script
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require ("incl/zipfile.inc.php");
$zipfile = new zipfile();
$filedata = implode("", file("incl/zipfile.inc.php"));
$zipfile->add_dir("incl/");
$zipfile->add_file($filedata, "incl/zipfile.inc.php");
header("Content-type: application/octet-stream");
header("Content-disposition: attachment; filename=zipfile.zip");
echo $zipfile->file();
?>
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Extracting Image With PHP
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$contenttograbimagefrom = $youroriginalhtmlwithimage;
$firstImage = "";
$output = preg_match_all('/<img.+src=[\'"]([^\'"]+)[\'"].*>/i', $contenttograbimagefrom, $ContentImages);
$firstImage = $ContentImages[1] [0]; // To grab the first image
echo $firstImage;
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A simple PHP Mysql Class
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//Simply include this file on your page
require_once("DbConnect.class.php");
//Set up all yor paramaters for connection
$db = new DbConnect("localhost","user","password","database",$error_reporting=false,$persistent=false);
//Open the connection to your database
$db->open() or die($db->error());
//Query the database now the connection has been made
$db->query("SELECT * FROM....") or die($db->error());
//You have several options on ways of fetching the data
//as an example I shall use
while($row=$db->fetcharray()) {
//do some stuff
}
//close your connection
$db->close();
#################################################################
Class DbConnect {
var $host = '';
var $user = '';
var $password = '';
var $database = '';
var $persistent = false;
var $conn = NULL;
var $result= false;
var $error_reporting = false;
/*constructor function this will run when we call the class */
function DbConnect ($host, $user, $password, $database, $error_reporting=true, $persistent=false) {
$this->host = $host;
$this->user = $user;
$this->password = $password;
$this->database = $database;
$this->persistent = $persistent;
$this->error_reporting = $error_reporting;
}
function open() {
if ($this->persistent) {
$func = 'mysql_pconnect';
} else {
$func = 'mysql_connect';
}
/* Connect to the MySQl Server */
$this->conn = $func($this->host, $this->user, $this->password);
if (!$this->conn) {
return false;
}
/* Select the requested DB */
if (@!mysql_select_db($this->database, $this->conn)) {
return false;
}
return true;
}
/*close the connection */
function close() {
return (@mysql_close($this->conn));
}
/* report error if error_reporting set to true */
function error() {
if ($this->error_reporting) {
return (mysql_error()) ;
}
}
function query($sql) {
$this->result = @mysql_query($sql, $this->conn);
return($this->result != false);
}
function affectedrows() {
return(@mysql_affected_rows($this->conn));
}
function numrows() {
return(@mysql_num_rows($this->result));
}
function fetchobject() {
return(@mysql_fetch_object($this->result, MYSQL_ASSOC));
}
function fetcharray() {
return(mysql_fetch_array($this->result));
}
function fetchassoc() {
return(@mysql_fetch_assoc($this->result));
}
function freeresult() {
return(@mysql_free_result($this->result));
}
}
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