Learning PHP and MySQL

Saturday, August 19, 2006

Example 11-27 Checking the file type

Example 11-27 checks the file type to make sure it’s either a JPEG or a GIF file.

<?php

if($HTTP_POST_FILES['upload_file']['type']  !=  "image/gif"  AND
$HTTP_POST_FILES['upload_file']['type']  !=  "image/pjpeg"  AND
$HTTP_POST_FILES['upload_file']['type']  !="image/jpeg")  {
   $error  =  "You  may  only  upload  .gif  or  .jpeg  files";
   unlink($HTTP_POST_FILES['upload_file']['tmp_name']);
}  else  {
   //the  file  is  the  correct  format
}

?>

The following line copies the file from the temporary directory into the uploads direc- tory using the same filename.

copy($HTTP_POST_FILES['upload_file']['tmp_name'],"uploads/".
$HTTP_POST_FILES['upload_file']['name']);

Using unlink, let’s remove the temporary file.

unlink($HTTP_POST_FILES['upload_file']['tmp_name']);

Posted by krautgrrl on 08/19 at 08:46 AM
Chapter 11 Code • (1) Comments • (0) Trackbacks • Permalink

Example 11-28 Processing an uploaded file

<?php
$maxsize=28480;  //set  the  max  upload  size  in  bytes 
if  (!$HTTP_POST_VARS['submit'])  {
  //print_r($HTTP_POST_FILES);
 $error="  ";
//this  will  cause  the  rest  of  the  processing  to  be  skipped
//and  the  upload  form  displays
}
if  (!is_uploaded_file($HTTP_POST_FILES['upload_file']['tmp_name'])  AND
!isset($error))  {
  $error  =  "<b>You  must  upload  a  file!</b><br><br>";
  unlink($HTTP_POST_FILES['upload_file']['tmp_name']);
}
if  ($HTTP_POST_FILES['upload_file']['size']  >  $maxsize  AND  !isset($error))  {
  $error  =  "<b>Error,  file  must  be  less  than  $maxsize  bytes.</b><br><br>";
  unlink($HTTP_POST_FILES['upload_file']['tmp_name']);
}
if($HTTP_POST_FILES['upload_file']['type']  !=  "image/gif"  AND
$HTTP_POST_FILES['upload_file']['type']  !=  "image/pjpeg"  AND
$HTTP_POST_FILES['upload_file']['type']  !="image/jpeg"  AND  !isset($error))  {
  $error  =  "<b>You  may  only  upload  .gif  or  .jpeg  files.</b><br><br>";
  unlink($HTTP_POST_FILES['upload_file']['tmp_name']);
}
if  (!isset($error))  {
copy($HTTP_POST_FILES['upload_file']['tmp_name'],"uploads/".$HTTP_POST_FILES
['upload_file']['name']); 
  unlink($HTTP_POST_FILES['upload_file']['tmp_name']); 
  print  "Thank  you  for  your  upload.";
  exit;
}
else
{
  echo  ("$error");
}
?>

<html>
<head></head>
<body>
<form  action="<?=$PHP_SELF?>"  method="post"  enctype="multipart/form-data"> 
Choose  a  file  to  upload:<br>
<input  type="file"  name="upload_file"  size="80">
<br>
<input  type="submit"  name="submit"  value="submit">
</form>
</body>
</html>

Posted by krautgrrl on 08/19 at 08:49 AM
Chapter 11 Code • (26) Comments • (2) Trackbacks • Permalink

Example 11-29 Executing df and displaying the results

<?php exec("df",$output_lines,$return_value);
echo  ("Command  returned  a  value  of  $return_value.");
echo  "</pre>";
foreach  ($output_lines  as  $output)  {
  echo  "$o";
}
echo  "</pre>";
?>

For our system, we get the screen in Figure 11-23.

Posted by krautgrrl on 08/19 at 08:52 AM
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Friday, August 18, 2006

Figure 10-03 Text boxes

<form>
<input  type="text"  name="search"  size="10"  maxlength="30"  />
</form>

This creates the Figure 10-03 in the Learning PHP & MySQL book.

Posted by krautgrrl on 08/18 at 10:56 AM
Chapter 10 Code • (0) Comments • (1204) Trackbacks • Permalink

Figure 10-04 A simple form with a text area element

<form>
<label>Suggestion:  <textarea  name="suggestions"  cols="40"  rows="5"></textarea>
</label>
<input  type="submit"  value="Go!  />
</form>

This creates the example in Figure 10-04 in the book.

Posted by krautgrrl on 08/18 at 10:58 AM
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Figure 10-05 Checkboxes

<form>
<fieldset>
<label>Italian  <input  type="checkbox"  name="food[]"  value="Italian"  /></label>
<label>Mexican  <input  type="checkbox"  name="food[]"  value="Mexican"  /></label>
<label>Chinese  <input  type="checkbox"  name="food[]"  value="Chinese"
checked="checked"  /></label>
</fieldset>
<input  type="submit"  value="Go!  />
</form>

This code displays Figure 10-05 in the book.

Posted by krautgrrl on 08/18 at 10:59 AM
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Figure 10-06 Radio buttons

<form>
<fieldset>
<label>Italian  <input  type="radio"  name="food"  value="Italian"  /></label>
<label>Mexican  <input  type="radio"  name="food"  value="Mexican"  /></label>
<label>Chinese  <input  type="radio"  name="food"  value="Chinese"
checked="checked"    /></label>
</fieldset>
<input  type="submit"  value="Go!  />
</form>

This code generates the example in Figure 10-06 in the book.

Posted by krautgrrl on 08/18 at 11:00 AM
Chapter 10 Code • (12) Comments • (0) Trackbacks • Permalink

Figure 10-09 Selecting Italian and Chinese

<html>
<head>
   <title>Using  Default  Checkbox  Values</title>
</head>
<body>
<?php
$food=$_GET[food];
$self=$_SERVER['PHP_SELF'];
if  (!empty($food))
{
   echo  "The  foods  selected  are:<br  />";
   foreach($_GET[food]  as  $foodstuf)
   {

      }
   }
else
{
   echo  ("<form  action=\"$self\"  ");
   echo  ('method="get">
   <fieldset>
     <label>Italian  <input  type="checkbox"  name="food[]"  value="Italian"  /></label>
     <label>Mexican  <input  type="checkbox"  name="food[]"  value="Mexican"  /></label>     
     <label>Chinese  <input  type="checkbox"  name="food[]"  value="Chinese"
checked="checked"  /></label>
     </fieldset>
       <input  type="submit"  value="Go!"  >
             ');
}
?>
</body>
</html>

This code displays the graphic Figure 10-09 in the book.

Posted by krautgrrl on 08/18 at 11:03 AM
Chapter 10 Code • (19) Comments • (4) Trackbacks • Permalink

Thursday, August 03, 2006

Question 05-01 What’s wrong with this function call?

This code is for Question 5-1.

<?php
//  define  a  function 
function  Response  {
  echo  "Have  a  good  day!<br/><br/>";
}

//  driving  to  work
echo  "Are  you  going  to  merge?  <br/>"; 
Response;

//  at  the  office
echo  "I  need  a  status  report  on  all  your  projects  in  the  next  10  minutes  for  my management  meeting.<br/>";
Response;

//  at  the  pub  after  work
echo  "Did  Bill  get  everything  he  needed  today?  He  was  sure  crabby!<br/>"; 
Response;
?>

Posted by krautgrrl on 08/03 at 08:27 AM
Chapter 5 Code • (3) Comments • (0) Trackbacks • Permalink
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