Learning PHP and MySQL

Friday, August 18, 2006

Example 11-13 Detecting whether a string is contained in another string

<?php
   $password="secretpassword1";

    if  (strstr($password,"password")){
     echo('Passwords  cannot  contain  the  word  "password".');
  }
else  {
   echo  ("Password  accepted.");
  }
?>

Example 11-13 outputs the following:

Passwords cannot contain the word “password”.

Posted by krautgrrl on 08/18 at 05:56 PM
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Example 11-14 Using several functions together to extract a portion of a string

<?php
   $test_string="testing  testing  Username:Michele  Davis";
   $position=strpos($test_string,"Username:");

    //add  on  the  length  of  the  Username:
   $start=$position+strlen("Username:");

   echo  "$test_string<br>";
   echo  "$position<br>";
   echo  substr($test_string,$start);
?>

Posted by krautgrrl on 08/18 at 05:58 PM
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Example 11-15 A simple echo of the timestamp

<?php
$timestamp=  time();
echo  $timestamp;
?>

Posted by krautgrrl on 08/18 at 05:59 PM
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Example 11-16 Making the date and time appear like we expect

<?php
$timestamp=  time();
echo  date("m/d/y  G.i:s",$timestamp);
?>

This code returns Figure 11-14.

Posted by krautgrrl on 08/18 at 06:00 PM
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Example 11-17 Adding two days to the date

<?php
$timestamp=  time();
echo  date("m/d/y  G.i:s",$timestamp);
$seconds=2*24*60*60;
$timestamp+=$seconds;
echo  "<br>new  dates  is:";
echo  date("m/d/y  G.i:s",$timestamp);
?>

This outputs:

12/13/05 16.28:32
new dates is:12/15/05 16.28:32

Posted by krautgrrl on 08/18 at 06:02 PM
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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
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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
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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
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