PHP Function

PHP Function

• 1.
  PHP Functions Reber JahwarM.
• 2.
  Chosen functions : ZIPFunctions Filesystem Functions Calendar Functions
• 3.
  • The PHPZip files functions allows you to read and edit or close the ZIP files. • The ZIP include 10 different functions : Functions Description PHP Zip_close() Closes a ZIP file 4 Zip_entry_close() Closes an entry in the ZIP file 4 zip_entry_compressedsize() Returns the compressed size of an entry in the ZIP file 4 Zip_entry_compressionmethod() Returns the compression method of an entry in the ZIP file 4 Zip_entry_filesize() Returns the actual file size of an entry in the ZIP file 4 Zip_entry_name() Returns the name of an entry in the ZIP file 4 Zip_entry_open() Opens an entry in the ZIP file for reading 4 Zip_enrty_read() Reads from an open entry in the ZIP file 4 Zip_open() Opens a ZIP file 4 Zip_read() Reads the next entry in a ZIP file 4 ZIP Functions
• 4.
  Note : ZIPfunctions and the Zip library is not enabled by default and must be downloaded ! <?php $zip = zip_open("test.zip"); zip_read($zip); // some code zip_close($zip); ?> <?php $zip = zip_open("test.zip"); { while ($zip_entry = zip_read($zip)) { echo "Name: " . zip_entry_name($zip_entry) ; echo "Compressed Size: " zip_entry_compressedsize($zip_entry); } zip_close($zip); } ?> Examples :
• 5.
  • The PHPfilesystem functions allow you to access and manipulate the system files in the PC . • Filesystem include more than 70 functions basename() Returns the filename component of a path 3 disk_total-space() Returns the total size of a directory 4 Is_excutable() Checks whether a file is executable 3 is_uploaded_file() Checks whether a file was uploaded via HTTP POST 3 stat() Returns information about a file 3 realpath() Returns the absolute pathname 4 is_writable() Checks whether a file is writeable 4 fgetc() Returns a character from an open file 3 Filesystem Functions :
• 6.
  Note :The filesystemfunctions are default no installation needed to use these functions. <?php $path = "/CR90/file.php"; echo basename($path) ."<br/>"; ?> <?php print_r(pathinfo("/CR90/file.txt")); ?> Output : ( [dirname] => /CR90 [basename] => file.txt [extension] => txt ) Examples : Output : file.php
• 7.
  • The calendarfunctions are useful when working with different calendar formats and use it inside the PHP code for some reasons . • The standard it is based on is the Julian day count . • Julian day count JDC of today is ( 3 February 2013 ) . • If we want to use another type of calendar format we must first convert to Julian day count, then to the calendar format. ~ The calendar function in PHP include 18 different type of functions : Calendar :
• 8.
  cal_days_in_month() Returns thenumber of days in a month for a specified year 4 cal_from_jd() Converts a Julian day count into a date of a specified calendar 4 cal_info() Returns information about a given calendar 4 cal_to_jd() Converts a date to Julian day count 4 easter_date() Returns the Unix timestamp for midnight on Easter of a specified year 3 GregorianToJD() Converts a Gregorian date to a Julian day count 3 JDDayOfWeek() Returns the day of a week 3 JDMonthName() Returns a month name 3 JDToGregorian() Converts a Julian day count to a Gregorian date 3 Note :The windows version of PHP has built-in support for the calendar extension. So, the calendar functions will work automatically.. Calendar Functions :
• 9.
  Output : There was30 days in January 2013 Output : Sunday <?php $d=cal_days_in_month(CAL_GREGORIAN,1,2013); echo("There was $d days in January 2013"); ?> <?php $jd=cal_to_jd(CAL_GREGORIAN,date("m"),date("d"),date("Y")); echo(jddayofweek($jd,1)); ?> Examples :