FreeBSD memcache.so error after portupgrade

Submitted by bboldi on Wed, 04/11/2012 - 18:38

I got the following error for PHP after recent portupgrade:

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/20090626/memcache.so' - /usr/local/lib/php/20090626/memcache.so: Undefined symbol "php_session_create_id" in Unknown on line 0

to fix this all you need to do is reinstall pecl-memcache, like this:

cd /usr/ports/databases/pecl-memcache
make deinstall
make install clean

that should make the problem go away ...

Adding Method to an Object on the Fly in PHP

Submitted by bboldi on Wed, 02/15/2012 - 17:27

PHP
OOP

If you need to add functions to an Object on the fly in PHP, here is a possible solution:

class MyClass
{
    public function __call($m, $a)
    {
        if (isset($this->$m)) {
            $func = $this->$m;
            $func();
        }
    }
}
 
$test = new MyClass();
$test ->runtimeAddedFunction = function () { echo "It Works !"; };
$test ->runtimeAddedFunction();

Redefine and then restore a function with Runkit

Submitted by bboldi on Mon, 01/16/2012 - 21:15

Sometimes during PHP unit testing You'll need to redefine a function, and then - later - restore it to it's original state. One way to do that with Runkit ... Let's say that we don't want to get "Cannot modify header information - headers already sent by" error messages when testing a code which uses setcookie php command. We can use the following trick:

use it with caution, and do not forget to RESTORE the function - or it may surprise you !

// mock setcookie
 
// mock setcookie
runkit_function_copy('setcookie','setcookie_ORIGINAL');
runkit_function_redefine('setcookie','','return true;');
 
 
// functional code here
 
 
// restore setcookie, cleanup
runkit_function_remove('setcookie');
runkit_function_copy('setcookie_ORIGINAL','setcookie');
runkit_function_remove('setcookie_ORIGINAL');

php_runkit.dll for PHP 5.3 and up

Submitted by bboldi on Wed, 01/11/2012 - 11:57

PHP

I have been struggling with setting up runkit with PHP 5.3 under Windows 7, and found out that there is no DLL released for that version, and PHP will not work with pre-compiled DLL's you can found on the net, so I made my own dll which works. Just wanted to share it in hope that it will help others as well.

Attachments:

php_runkit.zip

Drupal inspired stand alone db_query function

Submitted by bboldi on Wed, 01/11/2012 - 11:31

Drupal
PHP

I like drupal's db_query solution, it's simple, it's secure and easy to implement. If you want to use it outside of the Drupal framework, here is a stand alone code for mysql...

function _db_query_callback($match, $init = FALSE) {
	static $args = NULL;
 
	if ($init) {
		$args = $match;
		return;
	}
 
	switch ($match[1]) {
		case '%d': // We must use type casting to int to convert FALSE/NULL/(TRUE?)
		return (int) array_shift($args); // We don't need db_escape_string as numbers are db-safe
		case '%s':
			return mysql_escape_string(array_shift($args));
		case '%%':
			return '%';
		case '%f':
			return (float) array_shift($args);
		case '%b': // binary data
		        return  "'".mysql_real_escape_string(array_shift($args))."'";
	}
}
 
 
function db_query($query)
{
	$args = func_get_args();
 
	array_shift($args);
 
	if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
		$args = $args[0];
	}
 
	_db_query_callback($args, TRUE);
	$query = preg_replace_callback('/(%d|%s|%%|%f|%b)/', '_db_query_callback', $query);
 
	return mysql_query($query);
}

Firts you need to connect to the database, then you can use the function like this:

$conn = mysql_connect([HOST],[USERNAME],[PASSWORD]) or die(mysql_error());;
mysql_select_db([DB_NAME]) or die(mysql_error());
 
db_query('INSERT INTO `demo_table` (name,address,number) VALUES("%s","%s",%d)','name','address',123);

Attachments:

db_query.php_.txt

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