Thursday, January 5, 2012

PHP Directory Functions

PHP Directory Introduction

The directory functions allow you to retrieve information about directories and their contents.

Installation

The directory functions are part of the PHP core. There is no installation needed to use these functions.

PHP Directory Functions

PHP: indicates the earliest version of PHP that supports the function.
Function Description PHP
chdir() Changes the current directory 3
chroot() Changes the root directory of the current process 4
dir() Opens a directory handle and returns an object 3
closedir() Closes a directory handle 3
getcwd() Returns the current directory 4
opendir() Opens a directory handle 3
readdir() Returns an entry from a directory handle 3
rewinddir() Resets a directory handle 3
scandir() Lists files and directories inside a specified path 5


PHP Directory Constants

PHP: indicates the earliest version of PHP that supports the constant.
Constant Description PHP
DIRECTORY_SEPARATOR   3
PATH_SEPARATOR   4


http://www.w3schools.com/php/php_ref_directory.asp
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Sunday, January 1, 2012

PHP Date / Time Functions

PHP Date / Time Introduction

The date/time functions allow you to extract and format the date and time on the server.
Note: These functions depend on the locale settings of the server!

Installation

The date/time functions are part of the PHP core. There is no installation needed to use these functions.

Runtime Configuration

The behavior of the date/time functions is affected by settings in php.ini.
Date/Time configuration options:
Name Default Description Changeable
date.default_latitude  "31.7667" Specifies the default latitude (available since PHP 5). This option is used by date_sunrise() and date_sunset() PHP_INI_ALL
date.default_longitude "35.2333" Specifies the default longitude (available since PHP 5). This option is used by date_sunrise() and date_sunset() PHP_INI_ALL
date.sunrise_zenith "90.83" Specifies the default sunrise zenith (available since PHP 5). This option is used by date_sunrise() and date_sunset() PHP_INI_ALL
date.sunset_zenith "90.83" Specifies the default sunset zenith (available since PHP 5). This option is used by date_sunrise() and date_sunset() PHP_INI_ALL
date.timezone "" Specifies the default timezone (available since PHP 5.1) PHP_INI_ALL


PHP Date / Time Functions

PHP: indicates the earliest version of PHP that supports the function.
Function Description PHP
checkdate() Validates a Gregorian date 3
date_default_timezone_get() Returns the default time zone 5
date_default_timezone_set() Sets the default time zone 5
date_sunrise() Returns the time of sunrise for a given day / location 5
date_sunset() Returns the time of sunset for a given day / location 5
date() Formats a local time/date 3
getdate() Returns an array that contains date and time information for a Unix timestamp 3
gettimeofday() Returns an array that contains current time information 3
gmdate() Formats a GMT/UTC date/time 3
gmmktime() Returns the Unix timestamp for a GMT date 3
gmstrftime() Formats a GMT/UTC time/date according to locale settings 3
idate() Formats a local time/date as integer 5
localtime() Returns an array that contains the time components of a Unix timestamp 4
microtime() Returns the microseconds for the current time 3
mktime() Returns the Unix timestamp for a date 3
strftime() Formats a local time/date according to locale settings 3
strptime() Parses a time/date generated with strftime() 5
strtotime() Parses an English textual date or time into a Unix timestamp 3
time() Returns the current time as a Unix timestamp 3


PHP Date / Time Constants

PHP: indicates the earliest version of PHP that supports the constant.
Constant Description PHP
DATE_ATOM Atom (example: 2005-08-15T16:13:03+0000)  
DATE_COOKIE HTTP Cookies (example: Sun, 14 Aug 2005 16:13:03 UTC)  
DATE_ISO8601 ISO-8601 (example: 2005-08-14T16:13:03+0000)  
DATE_RFC822 RFC 822 (example: Sun, 14 Aug 2005 16:13:03 UTC)  
DATE_RFC850 RFC 850 (example: Sunday, 14-Aug-05 16:13:03 UTC)  
DATE_RFC1036 RFC 1036 (example: Sunday, 14-Aug-05 16:13:03 UTC)  
DATE_RFC1123 RFC 1123 (example: Sun, 14 Aug 2005 16:13:03 UTC)  
DATE_RFC2822 RFC 2822 (Sun, 14 Aug 2005 16:13:03 +0000)  
DATE_RSS RSS (Sun, 14 Aug 2005 16:13:03 UTC)  
DATE_W3C World Wide Web Consortium (example: 2005-08-14T16:13:03+0000)



 http://www.w3schools.com/php/php_ref_date.asp
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