egroupware_official/phpgwapi/inc/php3_support_functions.inc.php
2002-02-10 12:28:24 +00:00

306 lines
7.9 KiB
PHP
Executable File

<?php
/**************************************************************************\
* phpGroupWare API - PHP3 Compatibility layer *
* This file written by Dan Kuykendall <seek3r@phpgroupware.org> *
* and Mark Peters <skeeter@phpgroupware.org> *
* and Miles Lott <milosch@phpgroupware.org> *
* and Jason Wies <Zone@phpgroupware.org> *
* Has replications of PHP4 only functions to allow for transparent PHP3 *
* compatibility *
* Copyright (C) 2000, 2001 Dan Kuykendall *
* -------------------------------------------------------------------------*
* This library is part of the phpGroupWare API *
* http://www.phpgroupware.org/api *
* ------------------------------------------------------------------------ *
* This library is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 2.1 of the License, *
* or any later version. *
* This library is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
* See the GNU Lesser General Public License for more details. *
* You should have received a copy of the GNU Lesser General Public License *
* along with this library; if not, write to the Free Software Foundation, *
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *
\**************************************************************************/
/* $Id$ */
/* array_keys (PHP 4 >= 4.0.0)
* array array_keys (array input, mixed [search_value])
* array_keys() returns the keys, numeric and string, from the input array.
*/
function array_keys($arr, $term='')
{
$t = array();
while(list($k,$v) = each($arr))
{
if($term && $v != $term)
{
continue;
$t[] = $k;
}
return $t;
}
}
/* array_merge (PHP 4 >= 4.0.0)
* array array_merge (array array1, array array2 [, array ...])
* array_merge() merges the elements of two or more arrays together so that the values
* of one are appended to the end of the previous one. It returns the resulting array.
*/
function array_merge($array1, $array2, $array3='', $array4='', $array5='', $array6='', $array7='', $array8='', $array9='', $array10='')
{
$rarray = array();
for($i = 1; $i <= 10; $i++)
{
$this_array = ${'array' . $i};
if(is_array($this_array))
{
reset($this_array);
while(list($key,$value) = each($this_array))
{
if(is_int($key))
{
$rarray[] = $value;
}
else
{
$rarray[$key] = $value;
}
}
}
}
return $rarray;
}
/* array_pop (PHP 4 >= 4.0.0)
* mixed array_pop (array array)
* array_pop() pops and returns the last value of the array, shortening the array by
* one element. If array is empty (or is not an array), NULL will be returned.
*/
function array_pop(&$array)
{
if(!is_array($array) || @count($array) == 0)
{
return NULL;
}
reset($array);
$rtrn = array();
$i = count($array) + 1;
while(list($key,$value) = each($array))
{
$i--;
if($i == 1)
{
$last = $value;
}
else
{
$rtrn[$key] = $value;
}
}
$array = $rtrn;
return $last;
}
/* array_push
* int array_push (array array, mixed var [, mixed ...])
* array_push() treats array as a stack, and pushes the passed variables onto the end
* of array. The length of array increases by the number of variables pushed. Has the
* same effect as '$array[] = $var;' repeated for each var.
*/
/*
function array_push()
{
}
*/
/* array_reverse (PHP 4 >= 4.0.0)
* array array_reverse (array array [, bool preserve_keys])
* array_reverse() takes input array and returns a new array with the order of the
* elements reversed, preserving the keys if preserve_keys is TRUE.
* Note: The second parameter was added in PHP 4.0.3.
*/
/*
function array_reverse ($array, $preserve_keys = False)
{
for(list($key,$value) = @end($array); list($key,$value) = @prev($array); )
{
$temp_array[$key] = $value;
}
return $temp_array;
}
*/
/* array_search (PHP 4 >= 4.0.5)
* mixed array_search (mixed needle, array haystack [, bool strict])
* Searches haystack for needle and returns the key if it is found in the array, FALSE
* otherwise.
*/
function array_search($needle, $haystack, $strict=False)
{
@reset($haystack);
while(list($key,$value) = each($haystack))
{
if($haystack[$key]==$needle && (!$strict || gettype($haystack[$key])==gettype($needle)))
{
return $key;
}
}
return False;
}
/* array_shift (PHP 4 >= 4.0.0)
* mixed array_shift (array array)
* array_shift() shifts the first value of the array off and returns it, shortening the
* array by one element and moving everything down. If array is empty (or is not an
* array), NULL will be returned.
*/
function array_shift(&$array)
{
if(!is_array($array) || @count($array) == 0)
{
return NULL;
}
reset($array);
$rtrn = array();
$i = 0;
while(list($key,$value) = each($array))
{
$i++;
if($i == 1)
{
$one = $value;
}
else
{
$rtrn[$key] = $value;
}
}
$array = $rtrn;
return $one;
}
/* array_unique (PHP 4)
* array array_unique (array array)
* array_unique() takes input array and returns a new array without duplicate values.
*/
function array_unique ($array)
{
reset($array);
$reversed_array = Array();
while(list($key,$value) = each($array))
{
if(!isset($reversed_array[$value]))
{
$reversed_array[$value] = $key;
}
}
@unset($key);
@unset($value);
while(list($key,$value) = each($reversed_array))
{
$new_array[$key] = $value;
}
return $new_array;
}
/* array_unshift (PHP 4 >= 4.0.0)
* int array_unshift (array array, mixed var, mixed [...])
* array_unshift() prepends passed elements to the front of the array. Note that the
* list of elements is prepended as a whole, so that the prepended elements stay in the
* same order. Returns the new number of elements in the array.
*/
/*
function array_unshift()
{
}
*/
/* in_array (PHP 4 >= 4.0.0)
* bool in_array (mixed needle, array haystack [, bool strict])
* Searches haystack for needle and returns TRUE if it is found in the array, FALSE
* otherwise.
*/
function in_array($needle, $haystack, $strict = False)
{
if(is_array($haystack) && count($haystack))
{
for(@reset($haystack); $x=each($haystack); )
{
if($needle==$x[1] && (!$strict || gettype($needle)==gettype($x[1])))
{
return True;
}
}
return False;
}
}
/* is_bool (PHP 4 >= 4.0.0)
* bool is_bool (mixed var)
* is_bool -- Finds out whether a variable is a boolean
*/
function is_bool($var)
{
$retval = gettype($var);
if(strcmp($retval,'unknown type') == 0)
{
/* Chances are that we have a boolean */
if($var == True || $var == False)
{
return True;
}
else
{
return False;
}
}
else
{
return False ;
}
}
function print_r($array)
{
if(gettype($array)=="array")
{
echo '<ul>';
while(list($index, $subarray) = each($array) )
{
echo '<li>'.$index.' <code>=&gt;</code>';
print_r($subarray);
echo '</li>';
}
echo '</ul>';
}
else
{
echo $array;
}
}
/* str_repeat (PHP 4 >= 4.0.0)
* string str_repeat (string input, int multiplier)
* Returns input_str repeated multiplier times. multiplier has to be greater than 0.
*/
function str_repeat($input,$multiplier)
{
for($i=0,$output='';$i<$multiplier;$i++)
{
$output .= $input;
}
return $output;
}
?>