PHP Data Manipulation

Arrays

• An online array reference. Be sure to look through the array functions.
• $numbers = array();
• $numbers[0] = 2006;
• echo $numbers[0];
• unset($numbers[0]);
• foreach ($numbers as $number) {}
• foreach ($numbers as $index => $number) {}
• is_array() -- Variable Handling Functions
• count()
• max() -- Mathematical Functions
• min() -- Mathematical Functions
• array_reverse()
• sort()
• rsort()

Strings

• An online string reference. Be sure to look through the string functions.
• strlen()
• sprintf() -- returns a formatted string
• printf() -- prints a formatted string
• strtolower() -- convert to lowercase
• strtoupper() -- convert to uppercase
• strcmp() -- string compare
• substr() -- substring
• strpos() -- position of a substring
• str_replace() -- string replace

Regular Expressions

• An online regular expression reference.
• Note: php also supports perl-compatible regular expressions.
• ereg() -- case sensitive
• eregi() -- case insensitive
• one character wildcard - .
• to match a period - /.
• character list: [aeiou] or [0-9]
• start of string anchor: ^
• end of string anchor: $
• to match 0 or 1 times: ?
• to match 0 or more times: *
• to match 1 or more times: +
• to match 3 times: {3}
• to match between 3 and 5 times: {3,5}
• to group characters: (abc)
• to provide alternatives: |
• logical not: ^

Dates and Times

• An online date and time reference.
• getdate() -- get local time and date

Mathematical Functions

• An online math reference.

Lecture Code

Take a look at this file reference manual. Write a program named gettysburg.php that reads in this input file and generates the content of this document exactly.

Solution

The gettysburg.php file that we covered during lecture.

Laboratory

Do something interesting and non-trivial that uses some of today's material. If you are a Montana State student, demonstrate it during today's lab period. If you are a University of Leipzig student, either demonstrate it during today's lab period or e-mail it to Sebastian (loewe AT uni-leipzig.de) no later than the end of the day.