/[dtapublic]/to_be_filed/webprojs/php_libraries/php_library/pamc_gen_a/string/strfunc_int.inc
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Revision 35 - (show annotations) (download)
Sat Oct 8 23:35:33 2016 UTC (8 years, 2 months ago) by dashley
File size: 2710 byte(s)
Initial commit.
1 <?php
2 //$Header: /hl/cvsroots/gpl01/gpl01/webprojs/pamc/gen_a/sw/phplib/string/strfunc_int.inc,v 1.1 2007/06/21 23:34:03 dashley Exp $
3 //--------------------------------------------------------------------------------
4 //strfunc_int.inc -- PAMC string functions related to integer formatting.
5 //Copyright (C) 2007 David T. Ashley
6 //--------------------------------------------------------------------------------
7 //This program is free software; you can redistribute it and/or
8 //modify it under the terms of the GNU General Public License
9 //as published by the Free Software Foundation; either version 2
10 //of the License, or (at your option) any later version.
11 //
12 //This program is distributed in the hope that it will be useful,
13 //but WITHOUT ANY WARRANTY; without even the implied warranty of
14 //MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 //GNU General Public License for more details.
16 //
17 //You should have received a copy of the GNU General Public License
18 //along with this program; if not, write to the Free Software
19 //Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 //--------------------------------------------------------------------------------
21 //Author contact information:
22 // David T. Ashley
23 // P.O. Box 918
24 // Marshall, Michigan, 49068
25 // dta@e3ft.com
26 //--------------------------------------------------------------------------------
27 //Pads a string on the left by zero until it reaches the
28 //target length. If the string is longer than the target length,
29 //it is truncated on the left.
30 //
31 //Unit tested 20060408.
32 //
33 function STRFUNC_pad_left_zero($str_in, $target_len)
34 {
35 if ($target_len >= 0) //Ignore invalid targets
36 {
37 $len = strlen($str_in);
38
39 if ($target_len == 0)
40 {
41 $str_in = "";
42 }
43 else if ($len < $target_len)
44 {
45 //The input string is too short. Pad it on the left with zeros.
46 $to_add = $target_len - $len;
47 for ($i = 0; $i < $to_add; $i++)
48 {
49 $str_in = "0". $str_in;
50 }
51 }
52 else if ($len > $target_len)
53 {
54 //The input string is too long. Remove the extra characters.
55 $to_remove = $len - $target_len;
56
57 $str_in = substr($str_in, $to_remove);
58 }
59 //In the final omitted else case, there is length equality, and hence nothing to do.
60 }
61
62 return($str_in);
63 }
64 //
65 //--------------------------------------------------------------------------------
66 //End of $RCSfile: strfunc_int.inc,v $.
67 //--------------------------------------------------------------------------------
68 ?>

dashley@gmail.com
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