http://albertech.net Guides and Reviews for WordPress, PHP, MySQL, Apache, CMS Systems, jQuery, and other Technologies Tue, 31 Jan 2012 17:31:44 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 http://albertech.net/2011/10/guide-for-using-php-curl-with-https-requests-and-ca-certificate/ http://albertech.net/2011/10/guide-for-using-php-curl-with-https-requests-and-ca-certificate/#comments Wed, 05 Oct 2011 23:30:11 +0000 admin http://albertech.net/?p=790 I've looked at a number of cURL PHP tutorials on the web and noticed "curl_setopt($RESTsession, CURLOPT_SSL_VERIFYPEER, false);" is often used for accessing secure websites via cURL. This is often seen when people ask "I cannot connect to HTTPS site using cURL" or have the "SSL certificate problem, verify that the CA cert is OK" error with cURL. Ideally, you should set the SSL_VERIFYPEER value to true unless the server you are connecting to does not have a signed certificate. If you are sending confidential data, wouldn't you want to make sure you are connecting to the correct server? This guide will help you get the CA certificate from the remote server using Mozilla Firefox 6 and then use PHP with cURL to retrieve the information from the remote https server.]]> http://albertech.net/2011/10/guide-for-using-php-curl-with-https-requests-and-ca-certificate/feed/ 2 http://albertech.net/2011/05/fix-php_network_getaddresses-getaddrinfo-failed-name-or-service-not-known/ http://albertech.net/2011/05/fix-php_network_getaddresses-getaddrinfo-failed-name-or-service-not-known/#comments Tue, 31 May 2011 18:18:05 +0000 admin http://albertech.net/?p=712 The first thing to check is to see if you can ping the remote host using console.

• If no, then your primary name server on /etc/resolv.conf (Debian) is not working. Find a working DNS and restart Apache.
• If yes, then Apache is still connecting to the broken DNS server. You should try restarting Apache ... ]]> http://albertech.net/2011/05/fix-php_network_getaddresses-getaddrinfo-failed-name-or-service-not-known/feed/ 1 http://albertech.net/2009/06/php-display-page-render-time/ http://albertech.net/2009/06/php-display-page-render-time/#comments Fri, 12 Jun 2009 19:06:20 +0000 admin http://albertech.net/?p=191 http://albertech.net/2009/06/php-display-page-render-time/feed/ 3 http://albertech.net/2009/03/preventing-mysql-injection-with-php/ http://albertech.net/2009/03/preventing-mysql-injection-with-php/#comments Thu, 12 Mar 2009 22:13:14 +0000 admin http://albertech.net/?p=110 A good practice is to check input strings to make sure users don't put in mySQL commands in your server. For instance, if a username or password POST variable isn't filtered, there is a potential for an injection like 'OR myusername='. In the past, I've been using my own PHP toolkit to "clean" the input variables. But recently, I began searching to see if there are a built-in solution in PHP for this, especially since I'm converting a script written in Python that had the filter MySQLdb.escape_string. Enter mysql_real_escape_string()]]> http://albertech.net/2009/03/preventing-mysql-injection-with-php/feed/ 1 http://albertech.net/2009/01/php-mysql-datetime-to-seconds/ http://albertech.net/2009/01/php-mysql-datetime-to-seconds/#comments Tue, 27 Jan 2009 02:53:51 +0000 admin http://albertech.net/?p=59 $unixseconds = strtotime($mysqldate); For instance, you can use this to write a timeout script for login failures. Usually, a system should lock after 3-5 consecutive failed login attempts. I save the timestamp after the 5th consecutive login failure, then run a check on this timestamp if the current time is within the ~5-10 minute lockout window. 5 minutes is 300 seconds, 10 minutes is 600 seconds.]]> http://albertech.net/2009/01/php-mysql-datetime-to-seconds/feed/ 0 http://albertech.net/2009/01/validate-mysql-date-format-in-php/ http://albertech.net/2009/01/validate-mysql-date-format-in-php/#comments Wed, 07 Jan 2009 20:32:38 +0000 admin http://albertech.net/?p=54 More info on PHP 6 changes: http://wiki.php.net/todo/php60 It appears there will be a module that you can use to utilize existing ereg expressions, so that'll buy some time to port code from ereg* to preg*. function isValidDate($date){ if (preg_match ("/^([0-9]{4})-([0-9]{2})-([0-9]{2})$/", $date)) { return true; } else{ return false; } }]]> http://albertech.net/2009/01/validate-mysql-date-format-in-php/feed/ 0 http://albertech.net/2008/12/define-variables-in-php-5/ http://albertech.net/2008/12/define-variables-in-php-5/#comments Wed, 03 Dec 2008 23:46:35 +0000 admin http://albertech.net/?p=41 Notice: Undefined variable: " As a standard practice, you should define variables in PHP by putting in the variable name = FALSE; $myvar = FALSE; This is primarily for local variable names that aren't passed in through a $_REQUEST or $_POST, etc.]]> http://albertech.net/2008/12/define-variables-in-php-5/feed/ 0 http://albertech.net/2008/11/php-uptime-check/ http://albertech.net/2008/11/php-uptime-check/#comments Mon, 24 Nov 2008 21:49:33 +0000 admin http://albertech.net/?p=38 failwhale when the site gets too busy... j/k :D Here's the link to the script. http://www.programmingtalk.com/showthread.php?t=34999 http://albertech.net/2008/11/php-uptime-check/feed/ 0