Check if a URL exists/is online.
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MySQL 5.x Stored Routines, PHP Session Values, a little CSS oh my! Complex to set up but easy to impliment. Geared toward security, simplicity (of use) and convenience.
14
inxilpro
This is a random password generator that produces understandable passwords based on word lists. I've only included a 3 entry world list because you should chose a list based on your password requirements and your users. If you need to generate passwords that are 14 characters in length, you will want a different list than if you're generating 8 character passwords. And depending on your users, you may want to use certain lists. The list I use is about 4000 words that are 5-7 characters long, all well-known words that have had potentially objectionable content removed. For security reasons I don't want to include this list.
A note on security: though this generates relatively strong passwords for the average user, they are particularly susceptible to brute-force attacks. This is even more an issue if somehow your word list gets compromised. I would not recommend using this function for anything where a highly secure password is needed.
A note on choosing your list: You'll also see that I've built the system to avoid generating passwords with zeros and ones in them. This is because zero and upper-case "o" can be confused as can one, lower-case "L" and upper-case "i." When choosing my word list I was also sure to strip out all words that start with the letter "o" or "i" (to prevent the optional ucfirst() from creating 0/O and I/1 confusion) and words that contain the letter "L" (to prevent l/1 confusion). I find that this greatly helps with preventing confusion, but again weakens the security of the passwords some. It's your choice.
A note on security: though this generates relatively strong passwords for the average user, they are particularly susceptible to brute-force attacks. This is even more an issue if somehow your word list gets compromised. I would not recommend using this function for anything where a highly secure password is needed.
A note on choosing your list: You'll also see that I've built the system to avoid generating passwords with zeros and ones in them. This is because zero and upper-case "o" can be confused as can one, lower-case "L" and upper-case "i." When choosing my word list I was also sure to strip out all words that start with the letter "o" or "i" (to prevent the optional ucfirst() from creating 0/O and I/1 confusion) and words that contain the letter "L" (to prevent l/1 confusion). I find that this greatly helps with preventing confusion, but again weakens the security of the passwords some. It's your choice.
14
Simple chatting script to be placed on a corner of a website 
Also a good example how to use ajax.

Also a good example how to use ajax.
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Display contents of a folder, see comments in code.
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This function calculates how many lines will text occupy.
Example (simple):
$string = "Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Phasellus tincidunt posuere dolor";
$num_lines = how_many_lines(10, $string);
It accepts a third, optional, parameter $options, that allows you to change behaviour. $options should be array. Following configuration options are available:
'white_spaces' - default: array(' ', "\t") - array of chars, that should be treated as whitespace.
'new_lines' - default: array("\r\n", "\n") - array of strings, that should be treated as newlines. For example, for HTML you can set 'new_lines' => array('');
'force_line_breaks' - default: true - force wrapping, when the token is longer than width, or not. If set to false, and token cannot be fitted into $width, function will return false;
'callback' - default: null - callback function for determining character width. Must accept at least one parameter - $char
'callback_params' - default: array() - optional additional callback parameters
'char_widths' - default: null - associative array in a form $char => $width, which contains char width. If $char is not found in the array, it's width is defaulted to 0.
Example (simple):
$string = "Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Phasellus tincidunt posuere dolor";
$num_lines = how_many_lines(10, $string);
It accepts a third, optional, parameter $options, that allows you to change behaviour. $options should be array. Following configuration options are available:
'white_spaces' - default: array(' ', "\t") - array of chars, that should be treated as whitespace.
'new_lines' - default: array("\r\n", "\n") - array of strings, that should be treated as newlines. For example, for HTML you can set 'new_lines' => array('');
'force_line_breaks' - default: true - force wrapping, when the token is longer than width, or not. If set to false, and token cannot be fitted into $width, function will return false;
'callback' - default: null - callback function for determining character width. Must accept at least one parameter - $char
'callback_params' - default: array() - optional additional callback parameters
'char_widths' - default: null - associative array in a form $char => $width, which contains char width. If $char is not found in the array, it's width is defaulted to 0.
14
Get File Extensio
14
Strip HTML
15
Basic internal class loading for PHP. Could make some plugins with this code if used properly.
15
This litle snippet shows how to store passwords and then check inputed passwords if they are correct.
(In this snippet we use som pseduo code for the database connection).
(In this snippet we use som pseduo code for the database connection).
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A small recursive php function to determine the size of a directory by adding all it's contents together and returning them as an integer.









