Random Password in PHP
A simple way to create a random password in PHP
$password = substr(md5(time()), 0, rand(4,8));
20
Oct
Category Archives: PHP
25
Apr
Force Download Dialog with PHP using octect-stream
Use this code to force a download of any type of content with PHP
header("Content-type:application/octect-stream");
header('Content-Disposition: attachment; filename=filename_' . date('Y-m-d') . '.sql');
print "Hello World";
30
Oct
Compress PHP Output from .htaccess
Compress all PHP output by adding this line to .htaccess file
php_value output_handler ob_gzhandler
05
Oct
301 Redirect using PHP
301 Redirect using PHP
header ('HTTP/1.1 301 Moved Permanently');
header ('Location: '.$new_location);
19
Sep
CSV Export/Import Functions in PHP
Functions to Export and import CSV data using PHP
//*Get the result of the query as a CSV stream.
function CSVExport(query) {
globalsql;
sql_csv =sql->getSqlHandle(query);
header("Content-type:text/octect-stream");
header("Content-Disposition:attachment;filename=data.csv");
while(row = mysql_fetch_row(sql_csv)) {row = sql->_stripsls(row);
print '"' . implode('","',$row) . "\"\n";
}
exit;
}
25
Jun
HTTP Digest Authentication with PHP
The code for using HTTP Digest Authentication with PHP.
<?php
realm = 'Restricted area';
if (empty(_SERVER['PHP_AUTH_DIGEST'])) {
header('HTTP/1.1 401 Unauthorized');
header('WWW-Authenticate: Digest realm="'.realm.'",qop="auth",nonce="'.uniqid().'",opaque="'.md5(realm).'"');
die('Text to send if user hits Cancel button');
}
if (!empty(_SERVER['PHP_AUTH_DIGEST'])) {data = parseHttpDigest(_SERVER['PHP_AUTH_DIGEST']);
if(!data) die('Wrong Credentials!');
// generate the valid response
password = 'mypass';//sql->getOne("SELECT password FROM User WHERE username=".data['username']);A1 = md5(data['username'] . ':' .realm . ':' . password);A2 = md5(_SERVER['REQUEST_METHOD'].':'.data['uri']);
valid_response = md5(A1.':'.data['nonce'].':'.data['nc'].':'.data['cnonce'].':'.data['qop'].':'.A2);
if (data['response'] != valid_response) die('Wrong Credentials!');
// ok, valid username & password
print 'Doors open, beds made - welcome home';
}
//Function to parse the http auth header
function parseHttpDigest(digest) {
//Sample _SERVER['PHP_AUTH_DIGEST']
//username="admin", realm="Restricted area", nonce="467f579606f46", uri="/Projects/Nexty/Tests/auth.php", algorithm="MD5", qop="auth", cnonce="zaR5Of4nOsWwx9nA", nc=00000001, response="27212bf93d58fc12b5b7f5b0b95dc38b", opaque="cdce8a5c95a1427d74df7acbf41c9ce0"
//Protect against missing dataneeded_parts = array('nonce'=>1, 'nc'=>1, 'cnonce'=>1, 'qop'=>1, 'username'=>1, 'uri'=>1, 'response'=>1);
data = array();parts = explode(", ", digest);
foreach (parts as element) {bits = explode("=", element);data[bits[0]] = str_replace('"','',bits[1]);
unset(needed_parts[bits[0]]);
}
return needed_parts ? false :data;
}
Links
20
May
Searching text in a directory using find and grep
Use find and grep to search for a specific text in a directory. In this example, we search for files which uses the PHP short tag – <?
find -name '*.php' -exec grep '<?[^p\=]' {} \;
28
Mar
Find Difference Between 2 Dates in PHP
This function will find the difference between two given times. Does PHP already have a native function for that?
//The difference between 2 given time
function dateDifference(day_1,day_2) {
diff = strtotime(day_1) - strtotime(day_2);sec = diff % 60;diff = intval(diff / 60);min = diff % 60;diff = intval(diff / 60);hours = diff % 24;days = intval(diff / 24);
return array(sec,min,hours,$days);
}
If you just want the day difference…
diff = strtotime(day_1) - strtotime(day_2) + 1; //Find the number of secondsday_difference = ceil($diff / (60*60*24)) ; //Find how many days that is
This can be done using the DATEDIFF function in MySQL 5
[tags]php,code,date,difference,time[/tags]
07
Mar
Using PHP’s Curl functions behind a Proxy
Using PHP’s Curl functions even if the net is accessible only thru a proxy. This is the only way curl can be used if you use GoDaddy’s hosting.
<?php
ch = curl_init("http://rss.news.yahoo.com/rss/topstories");
curl_setopt(ch, CURLOPT_HEADER, false);
curl_setopt(ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt(ch, CURLOPT_PROXY, "http://192.168.0.15:80");
curl_setopt(ch, CURLOPT_PROXYPORT, 80);
//curl_setopt (ch, CURLOPT_PROXYUSERPWD, "username:password");
data = curl_exec (ch);
curl_close(ch);
printdata;
?>