Professional Web Applications Themes

Casting nulls - PHP Development

IF $int is null and I have a test If($int < 1) { //do some foobar } will $int be evaluated as a zero? IF I cast (int) $int.. will that turn a null $int into a zero?? Doentation aint too clear. Thanks, Carl....

  1. #1

    Default Casting nulls

    IF $int is null and I have a test

    If($int < 1) {
    //do some foobar
    }

    will $int be evaluated as a zero? IF I cast (int) $int.. will that turn a
    null $int into a zero??

    Doentation aint too clear.

    Thanks,

    Carl.
    Carl Furst Guest

  2. #2

    Default Re: [PHP] Casting nulls

    From: "Carl Furst" <carlvote.com>

    > IF $int is null and I have a test
    >
    > If($int < 1) {
    > //do some foobar
    > }
    >
    > will $int be evaluated as a zero? IF I cast (int) $int.. will that turn a
    > null $int into a zero??
    >
    > Doentation aint too clear.
    No idea what you're doing here, but you may want to look into the isset()
    and/or empty() functions for identifying NULLs.

    ---John Holmes...
    Cpt John W. Holmes Guest

  3. #3

    Default Re: [PHP] Casting nulls

    If I understood the question wouldn't this work???
    if (!is_null($int) && $int < 1)
    {
    // do some foobar
    }

    Carl Furst wrote:
    >IF $int is null and I have a test
    >
    >If($int < 1) {
    >//do some foobar
    >}
    >
    >will $int be evaluated as a zero? IF I cast (int) $int.. will that turn a
    >null $int into a zero??
    >
    >Doentation aint too clear.
    >
    >Thanks,
    >
    >Carl.
    >
    >
    >
    Gerard Samuel Guest

  4. #4

    Default Re: [PHP] Casting nulls

    * Thus wrote Carl Furst (carlvote.com):
    > IF $int is null and I have a test
    >
    > If($int < 1) {
    > //do some foobar
    > }
    >
    > will $int be evaluated as a zero? IF I cast (int) $int.. will that turn a
    > null $int into a zero??
    <?php
    echo (int) null;
    ?>

    0

    Curt
    --
    "I used to think I was indecisive, but now I'm not so sure."
    Curt Zirzow Guest

Similar Threads

  1. How to return default value for NULLs?
    By sblue in forum Coldfusion Database Access
    Replies: 6
    Last Post: October 10th, 07:42 PM
  2. Split string with nulls
    By siv786 in forum Macromedia ColdFusion
    Replies: 1
    Last Post: May 3rd, 05:14 PM
  3. empty strings vs nulls
    By Eric Walker in forum Perl / CGI
    Replies: 5
    Last Post: November 25th, 02:16 AM
  4. dealing with nulls....
    By Ken Schaefer in forum ASP
    Replies: 3
    Last Post: July 7th, 05:49 AM
  5. Problem with nulls
    By Bob in forum ASP.NET General
    Replies: 1
    Last Post: July 2nd, 08:38 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139