php - call_user_func_array

Description

mixed call_user_func_array ( callback $function, array $param_arr )
Call a user defined function with the parameters in param_arr.

Parameters

function

The function to be called.

param_arr

The parameters to be passed to the function, as an indexed array.

Return Values

Returns the function result, or FALSE on error.

Examples

Example 742. call_user_func_array() example

<?php


function debug($var, $val)
{
echo "***DEBUGGING\nVARIABLE: $var\nVALUE:";
if (is_array($val) || is_object($val) || is_resource($val)) {
print_r($val);
} else {
echo "\n$val\n";
}
echo "***\n";
}
$c = mysql_connect();
$host = $_SERVER["SERVER_NAME"];
call_user_func_array('debug', array("host", $host));call_user_func_array('debug', array("c", $c));
call_user_func_array('debug', array("_POST", $_POST));


?>

php - call_user_func

Description

mixed call_user_func ( callback $function [, mixed $parameter [, mixed $...]] )
Call a user defined function given by the function parameter.

Parameters

function

The function to be called. Class methods may also be invoked statically using this function by passing array($classname, $methodname) to this parameter.

parameter

Zero or more parameters to be passed to the function.

Note: Note that the parameters for call_user_func() are not passed by reference. 

<?php 

function increment(&$var) {

$var++;

}

$a = 0;

call_user_func('increment', $a);

echo $a; // 0

call_user_func_array('increment', array(&$a)); // You can use this instead

echo $a; // 1 

?>

Return Values

Returns the function result, or FALSE on error.

Examples

Example 743. call_user_func() example

<?php
function barber($type)
{
echo "You wanted a $type haircut, no problem";
}
call_user_func('barber', "mushroom");
call_user_func('barber', "shave");
?>

Example 744. Using a class method

<?php


class myclass {


function say_hello()
{
echo "Hello!\n";
}
}
$classname = "myclass";
call_user_func(array($classname, 'say_hello'));


?>

php - cal_to_jd

Description

int cal_to_jd ( int $calendar, int $month, int $day, int $year )
cal_to_jd() calculates the Julian day count for a date in the specified calendar. Supported calendars are CAL_GREGORIAN, CAL_JULIAN, CAL_JEWISH and CAL_FRENCH.

Parameters

calendar

Calendar to convert from, one of CAL_GREGORIAN, CAL_JULIAN, CAL_JEWISH or CAL_FRENCH.

month

The month as a number, the valid range depends on the calendar

day

The day as a number, the valid range depends on the calendar

year

The year as a number, the valid range depends on the calendar

Return Values

A Julian Day number.

php - cal_info

Description

array cal_info ( [int $calendar] )
cal_info() returns information on the specified calendar.
Calendar information is returned as an array containing the elements calname, calsymbol, month, abbrevmonth and maxdaysinmonth. The names of the different calendars which can be used as calendar are as follows:

• 0 or CAL_GREGORIAN - Gregorian Calendar
• 1 or CAL_JULIAN - Julian Calendar
• 2 or CAL_JEWISH - Jewish Calendar
• 3 or CAL_FRENCH - French Revolutionary Calendar

If no calendar is specified information on all supported calendars is returned as an array.

Parameters

calendar

Calendar to return information for. If no calendar is specified information about all calendars is returned.

Return Values

ChangeLog

Version	Description
Since 5.0	The calendar parameter becomes optional and defaults to "all calendars" if omitted.

Examples

Example 358. cal_info() example

<?php


$info = cal_info(0);


print_r($info);


?>

The above example will output:

Array
(
    [months] => Array
        (
            [1] => January
            [2] => February
            [3] => March
            [4] => April
            [5] => May
            [6] => June
            [7] => July
            [8] => August
            [9] => September
            [10] => October
            [11] => November
            [12] => December
        )

    [abbrevmonths] => Array
        (
            [1] => Jan
            [2] => Feb
            [3] => Mar
            [4] => Apr
            [5] => May
            [6] => Jun
            [7] => Jul
            [8] => Aug
            [9] => Sep
            [10] => Oct
            [11] => Nov
            [12] => Dec
        )

    [maxdaysinmonth] => 31
    [calname] => Gregorian
    [calsymbol] => CAL_GREGORIAN
)

php - cal_from_jd

Description

array cal_from_jd ( int $jd, int $calendar )
cal_from_jd() converts the Julian day given in jd into a date of the specified calendar. Supported calendar values are CAL_GREGORIAN, CAL_JULIAN, CAL_JEWISH and CAL_FRENCH.

Parameters

jd

Julian day as integer

calendar

Calendar to convert to

Return Values

Returns an array containing calendar information like month, day, year, day of week, abbreviated and full names of weekday and month and the date in string form "month/day/year".

Examples

Example 357. cal_from_jd() example

<?php


$today = unixtojd(mktime(0, 0, 0, 8, 16, 2003));


print_r(cal_from_jd($today, CAL_GREGORIAN));


?>

The above example will output:

Array
(
    [date] => 8/16/2003
    [month] => 8
    [day] => 16
    [year] => 2003
    [dow] => 6
    [abbrevdayname] => Sat
    [dayname] => Saturday
    [abbrevmonth] => Aug
    [monthname] => August
)

php - cal_days_in_month

Description

int cal_days_in_month ( int $calendar, int $month, int $year )
This function will return the number of days in the month of year for the specified calendar.

Parameters

calendar

Calendar to use for calculation

month

Month in the selected calendar

year

Year in the selected calendar

Return Values

The length in days of the selected month in the given calendar

Examples

Example 356. cal_days_in_month() example

<?php


$num = cal_days_in_month(CAL_GREGORIAN, 8, 2003); // 31


echo "There was $num days in August 2003";


?>

php - bzwrite

Description

int bzwrite ( resource $bz, string $data [, int $length] )
bzwrite() writes a string into the given bzip2 file stream.

Parameters

bz

The file pointer. It must be valid and must point to a file successfully opened by bzopen().

data

The written data.

length

If supplied, writing will stop after length (uncompressed) bytes have been written or the end of data is reached, whichever comes first.

Return Values

Returns the number of bytes written, or FALSE on error.

Examples

Example 355. bzwrite() example

<?php


$str = "uncompressed data";
$bz = bzopen("/tmp/foo.bz2", "w");
bzwrite($bz, $str, strlen($str));bzclose($bz);


?>

php - bzread

Description

string bzread ( resource $bz [, int $length] )
bzread() reads from the given bzip2 file pointer.
Reading stops when length (uncompressed) bytes have been read or EOF is reached, whichever comes first.

Parameters

bz

The file pointer. It must be valid and must point to a file successfully opened by bzopen().

length

If not specified, bzread() will read 1024 (uncompressed) bytes at a time.

Return Values

Returns the uncompressed data, or FALSE on error.

Examples

Example 354. bzread() example

<?php

$file = "/tmp/foo.bz2";$bz = bzopen($file, "r") or die("Couldn't open $file");
$decompressed_file = '';
while (!feof($bz)) {
$decompressed_file .= bzread($bz, 4096);
}bzclose($bz);

echo "The contents of $file are: <br />\n";
echo $decompressed_file;
?>

php - bzopen

Description

resource bzopen ( string $filename, string $mode )
bzopen() opens a bzip2 (.bz2) file for reading or writing.

Parameters

filename

The name of the file to open.

mode

Similar to the fopen() function ('r' for read, 'w' for write, etc.).

Return Values

If the open fails, bzopen() returns FALSE, otherwise it returns a pointer to the newly opened file.

Examples

Example 353. bzopen() example

<?php

$file = "/tmp/foo.bz2";$bz = bzopen($file, "r") or die("Couldn't open $file for reading");
bzclose($bz);
?>

php - bzerror

Description

array bzerror ( resource $bz )
Returns the error number and error string of any bzip2 error returned by the given file pointer.

Parameters

bz

The file pointer. It must be valid and must point to a file successfully opened by bzopen().

Return Values

Returns an associative array, with the error code in the errno entry, and the error message in the errstr entry.

Examples

Example 352. bzerror() example

<?php


$error = bzerror($bz);

echo $error["errno"];
echo $error["errstr"];


?>