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rythemton

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Posts posted by rythemton

    Preloader image on click of a button, while the next page is being loaded?

    in Javascript Help

    Posted

    Create a function that acts upon 'onsubmit'. This function could cover the page with a full size (width and height 100%) fix position DIV that has the image you want displayed.

     

    I wouldn't use the function to clear or change anything within the form itself, or you might loose the data from the form. Just covering the page would prevent the user from clicking submit again, and would let the user know that something was happening.

    Finding an easier way...

    in PHP Coding Help

    Posted 

    /* to make sure that "true" (string) isn't the same as TRUE (boolean)   */

    PHP considers every non-empty string to be TRUE, except "0", when comparing a STRING to a BOOLEAN.

    if( "FALSE" == TRUE ) // This will be considered TRUE because the string is not empty.
if( "FALSE" === TRUE ) // This will be considered FALSE because one is a STRING and the other a BOOLEAN

    Finding an easier way...

    in PHP Coding Help

    Posted

    To understand the difference between != and !==, you need to understand the difference between == and ===. The triple = will verify type as well as value, so it is stricter:

    if( "24" == 24 ) // This will return TRUE
if( "24" === 24 ) // This will return FALSE because one is an INT, the other a STRING
if( 1 == TRUE ) // This will return TRUE
if( 1 === TRUE ) // This will return FALSE because one is an INT, the other a BOOLEAN
if( FALSE == "" ) // This will return TRUE
if( FALSE === "" ) // This will return FALSE because one is a BOOLEAN, the other a STRING

    != is the opposite of ==, so if == is TRUE, then != is FALSE. !== is the opposite of ===, so if === is TRUE, then !== is FALSE.

    if( "24" != 24 ) // This will return FALSE
if( "24" !== 24 ) // This will return TRUE because one is an INT, the other a STRING
if( 1 != TRUE ) // This will return FALSE
if( 1 !== TRUE ) // This will return TRUE because one is an INT, the other a BOOLEAN
if( FALSE != "" ) // This will return FALSE
if( FALSE !== "" ) // This will return TRUE because one is a BOOLEAN, the other a STRING

    Sometimes you should use one over the other, and sometimes it don't matter. It will take experience to learn when it matters and when it doesn't.

     

    I hope this helps.

    Decode an email

    in PHP Coding Help

    Posted

    Here is code I created. Hope it gives you enough information to create one that does what you need:

    #!/usr/bin/php -q
<?php
/*
Parse Mail Script created by Jerry S Hamaker
Pooled together from multiple sources
Created on April 21, 2010

For each email that comes in, this script creates a private gallery, and places all parts of the email into files with details being placed into the database under the new private gallery. It also generates a medium size image (for very large images) and thumbnail for each image that comes in.
*/

require( "../admin/dbconnect.php" ); // This file connects to the MySQL server

$subject = "None";
$from = "";
$galleryid = 0;

//parse the email
function getbody( $message ) {
  global $subject, $from, $galleryid;
  $header = "";
  $type = "text/plain";
  $encoding = "none";
  $boundary = "";
  $body = "";
  $filename = "NoName";
  $lines = explode("\n", $message);
  $getheader = TRUE;
  foreach( $lines as $value ) {
    if( $getheader ) {
      $header .= $value . "\n";
      if (preg_match("/^Subject: (.*)/", $value, $matches)) {
        $subject = $matches[1];
      }
      if (preg_match("/^From: (.*)/", $value, $matches)) {
        $from = $matches[1];
      }
      if (preg_match("/^Content-Type: ([^;]+);/", $value, $matches)) {
        $type = $matches[1];
      }
      if (preg_match('/boundary="([^"]+)"/', $value, $matches)) {
        $boundary = $matches[1];
      }
      if (preg_match("/^Content-Transfer-Encoding: (.*)/", $value, $matches)) {
        $encoding = $matches[1];
      }
      if (preg_match('/filename="([^"]+)"/', $value, $matches)) {
        $filename = $matches[1];
      }
    }
    else {
      $body .= $value . "\n";
    }
    if (trim( $value )=="") {
      // empty line, header section has ended
      $getheader = FALSE;
    }
  }
  if ( $type == "multipart/mixed" || $type == "multipart/alternative" ) {
    getmultiparts( $body, $boundary );
  }
  else {
    if( $encoding == "base64" ) {
      $body = base64_decode( $body );
    }
    // store and process part
    $templocation = '../image/file_temp.tmp';
    if( $fh = fopen( $templocation, 'w' ) ) {
      fwrite( $fh, $body );
      fclose( $fh );
      $origname = $filename;
      $type1 = $type;
      $localname = $templocation;
      $checkimage = getimagesize( $localname );
      $imagewidth = ( isset( $checkimage[ 0 ] ) ? $checkimage[ 0 ] : 0 );
      $imageheight = ( isset( $checkimage[ 1 ] ) ? $checkimage[ 1 ] : 0 );
      $type2 = ( isset( $checkimage[ 'mime' ] ) ? $checkimage[ 'mime' ] : '' );
      $mimetype = ( $type1 == $type2 ? $type1 : ( $imagewidth == 0 || $imageheight == 0 ? $type1 : $type2 ) );
      $resizableimage = FALSE;
      if( $mimetype == "image/gif" || $mimetype == "image/jpeg" || $mimetype == "image/png" ) $resizableimage = TRUE;
        $query = "INSERT INTO images ( height, width, type, gallid,";
        $query .= " filename, imagename ) VALUES ( ";
        $query .= $imageheight . ", " . $imagewidth . ", \"" . mysql_real_escape_string( $mimetype ) . "\", ";
        $query .= $galleryid . ", \"" . mysql_real_escape_string( htmlize( $origname ) ) . "\", ";
        $query .= "\"" . mysql_real_escape_string( htmlize( $origname ) ) . "\" )";
        if( mysql_query( $query ) && $lastid = mysql_insert_id() ) {
          $filedestination = '../image/file_' . str_pad( $lastid, 5, '0', STR_PAD_LEFT ) . '.img';
          $thumbdestination = '../image/file_' . str_pad( $lastid, 5, '0', STR_PAD_LEFT ) . '.thm';
          $meddestination = '../image/file_' . str_pad( $lastid, 5, '0', STR_PAD_LEFT ) . '.med';
          if( rename( $localname, $filedestination ) ) {
            if( $resizableimage ) {
              $img_src = ( $mimetype == "image/gif" ? imagecreatefromgif( $filedestination ) : ( $mimetype == "image/png" ? imagecreatefrompng( $filedestination ) : imagecreatefromjpeg( $filedestination ) ) );
              if( $imagewidth > 600 ) {
                $medwidth = 600;
                $medheight = floor( $medwidth * $imageheight / $imagewidth );
                $img_dst = imagecreatetruecolor( $medwidth, $medheight );
                imagecopyresampled( $img_dst, $img_src, 0, 0, 0, 0, $medwidth, $medheight, $imagewidth, $imageheight );
                if( $mimetype == 'image/gif' ) {
                  imagegif( $img_dst, $meddestination );
                }
                elseif( $mimetype == 'image/png' ) {
                  imagepng( $img_dst, $meddestination );
                }
                else {
                  imagejpeg( $img_dst, $meddestination );
                }
                imagedestroy( $img_dst );
              }
              $thumbheight = ( $imageheight > 100 ? 100 : $imageheight );
              $thumbwidth = ( $imagewidth > 100 ? 100 : $imagewidth );
              if( $imageheight > $imagewidth ) {
                $thumbwidth = floor( $thumbheight * $imagewidth / $imageheight );
              }
              else {
                $thumbheight = floor( $thumbwidth * $imageheight / $imagewidth );
              }
              $img_dst = imagecreatetruecolor( $thumbwidth, $thumbheight );
              imagecopyresampled( $img_dst, $img_src, 0, 0, 0, 0, $thumbwidth, $thumbheight, $imagewidth, $imageheight );
              imagejpeg( $img_dst, $thumbdestination );
            }
            else {
              $defaultthumb = '../image/default.thm';
              if( file_exists( '../image/' . $mimetype . '_default.thm' ) ) {
                $defaultthumb = '../image/' . $mimetype . '_default.thm';
              }
              copy( $defaultthumb, $thumbdestination );
            }
          }
        }
      }
      // if( file_exists( $templocation ) ) unlink( $templocation );
  }
}

//parse multi-part
function getmultiparts( $message, $seperator ) {
  $lines = explode("\n", $message);
  $process = "";
  $firstsep = TRUE;
  foreach( $lines as $value ) {
    if( strpos( $value, $seperator ) === FALSE ) {
      $process .= $value . "\n";
    }
    else {
      if( $firstsep ) {
        $process = "";
        $firstsep = FALSE;
      }
      else {
        getbody( $process );
        $process = "";
      }
    }
  }
}

//get the email
$fd = fopen("php://stdin", "r");
$email = "";
while (!feof($fd)) {
    $email .= fread($fd, 1024);
}
fclose($fd);

$galleryname = date( 'Ymd His' ) . '-Emailed';
$query = 'INSERT INTO gallery ( gallname ) VALUES ( "' . mysql_real_escape_string( $galleryname ) . '" )';
$result = mysql_query( $query );
if( $result && $newgall = mysql_insert_id() ) {
$galleryid = $newgall;
getbody( $email );
$query = 'UPDATE gallery SET galldesc="' . mysql_real_escape_string( '--== ' . $subject . ' ==-- Uploaded By: ' . $from );
$query .= '" WHERE gallid=' . $galleryid;
mysql_query( $query );
}
?>

    I know it's long. I hope it helps you with what you are trying to do. This file uses a function to parse the email, if it finds multi-part boundaries, it use another function to split up the parts, and each part is then passed to the parse function. Once the email has been parsed, it updates the gallery name to include the subject of the email and the email address it came from.

    Booleans: What is the difference between NULL and empty?

    in PHP Coding Help

    Posted 

    $a = NULL; // i think $a will not keep anything
$b;  // it assign to the default value --> i think it must be the empty value

    Actually, both is_null( $a ) and is_null( $b ) will return TRUE responses. An unset or uninitialized variable is considered to have a NULL value. Setting a value to be NULL will also return a FALSE with the isset function, even though the value is set. Let's expand the chart:

    $a = "";

    $b = 0;

    $c = NULL;

    $d = "0";

    unset( $e );

     

    function            $a        $b        $c        $d        $e

    is_numeric          false    true      false    true      false

    is_null            false    false    true      false    true

    is_string          true      false    false    true      false

    empty              true      true      true      true      true

    isset              true      true      false    true      false

    ==""                true      true      true      false    true

    ===""              true      false    false    false    false

    Booleans: What is the difference between NULL and empty?

    in PHP Coding Help

    Posted

    It all depends on what you are doing:

    $a = "";

    $b = 0;

    $c = NULL;

    $d = "0";

     

    function            $a        $b        $c        $d

    is_numeric          false    true      false    true

    is_null            false    false    true      false

    is_string          true      false    false    true

    empty              true      true      true      true

     

    I've used it for multipurpose functions before:

    function multiPurpose( $value=NULL ) {
  if( is_null( $value ) ) {
    // this means no value was sent
  }
  elseif( is_numeric( $value ) ) {
    // this means a number was sent
  }
  elseif( is_array( $value ) ) {
    // this means an array was sent
  }
  else {
    // if it got here, it is none of the above, probably text
  }
}

    And sometimes it doesn't really matter.

    help please

    in Javascript Help

    Posted

    I thought you could get the value of selected options by just asking for the value, but I guess not. Your function should work, you can call the function by putting it in the quotes for the onchange.

     

    My codes should work if you replace the 'this.value' to 'this.options[ this.selectedIndex ].value', or if you didn't set any values in the options, you can change the 'value' to 'innerHTML' or 'text'.

    help please

    in Javascript Help

    Posted

    There should be no conflicts with the 'onsubmit' code.

     

    Try your way and/or my way of referencing the text field. There is more than one way to select DOM members.

     

    Yet another way of selecting the text field, but will only work if the input field is the next field, would be this code:

    this.nextSibling.value = this.value;

    Don't be afraid to try new things.

    variable won't exist beyond break;

    in PHP Coding Help

    Posted

    I do agree with AyKay47, you really shouldn't use globals. The reason classes have scope in the first place is to avoid cross-contamination with other code. I have dealt with cases, however, where using a global saved hours of reprogramming. Just use them with extreme caution.

     

    Your variable has no problem leaving the case, but is trapped within the scope of the class.

     

    AyKay47, the issue turpentyne is having is changing the value of a variable within a class, and not seeing any changes in the variable outside the class. The issue is thought to be because of using switch/case statements, but the real issue is a scope issue within a class. I was able to guess that classes were being used because of the '$this->' pointers.

    help please

    in Javascript Help

    Posted 

    <select onchange="document.getElementById( 'inputbox' ).value = this.value;">
<!-- Options Here -->
</select>
<input type="text" id="inputbox" name="inputbox" />

    Should work. I haven't tested it, though.

    Cant use math addition on two variables.

    in Javascript Help

    Posted

    Subtract works fine because subtract only works on numbers, so JavaScript turns the values into numbers before subtracting. Unfortunately, Addition works as concatenate as well as addition, so if one variable is text (it may only do this if the first variable is text, but I'm not sure), it will convert both to text and concatenate them. Try using the parseInt() function to force both numbers to be Ints before adding them.

    Split a string - or can you?

    in PHP Coding Help

    Posted

    Hmm. Since you can use array reference to check a letter, I thought it would work, but apparently it doesn't. This should work:

    $string = 'ThisText';

$newstring = '';
foreach( str_split( $string ) AS $letter ) {
    $newstring .= ( ctype_upper( $letter ) ? ' ' : '' ) . $letter;
}
$string = trim( $newstring );

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