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   8          </style><hr><a name="_C_ANTISPAM"><div style="background-color:yellow;font-family:courier new;"></a>CLASS <b>AntiSpam</b></div>
   9  <i>(Defined in: jpgraph_antispam.php : 545)</i><table border=1><tr><td>&nbsp;<a href="AntiSpam.html" style="font-family:arial;font-weight:bold;color:darkblue;">AntiSpam</a>&nbsp;</td></tr><tr><td valign=top>&nbsp;<a href="AntiSpam.html#_ANTISPAM_ANTISPAM">AntiSpam()</a>&nbsp;<br>
  10  &nbsp;<a href="AntiSpam.html#_ANTISPAM_RAND">Rand()</a>&nbsp;<br>
  11  &nbsp;<a href="AntiSpam.html#_ANTISPAM_SET">Set()</a>&nbsp;<br>
  12  &nbsp;<a href="AntiSpam.html#_ANTISPAM_STROKE">Stroke()</a>&nbsp;<br>
  13  </td></tr></table>&nbsp;<p><div style="font-weight:bold;font-family:arial;font-size:100%;">Class usage and Overview</div>This module is used to create AntiSpam challenges that can be used to prevent automatic signup by robots on WEB-pages. <p> &nbsp;
  14  <hr><span style="font-family:arial;font-size:120%;font-weight:bold;">Class Methods</span><hr><p>
  15  <p>&nbsp; <p> &nbsp; <span style='font-size:110%;'><a name="_ANTISPAM_ANTISPAM"><div style="border-top:solid black 2pt;background-color:lightblue;font-family:courier new;font-size:90%;font-weight:bold;"><b><font color="#000000">
  16  function&nbsp;AntiSpam($aData)</font>
  17  </b></div></a></span>
  18  
  19  <span style='font-family:arial;font-size:90%;'><i>Create a new ANtiSpam challenge image</i></span><p>
  20  
  21  <table cellspacing=0 style='border:black solid 1pt;' width=100%>
  22  <tr><th width=25%>Argument</th><th width=15%>Default</th><th width=60%>Description</th></tr>
  23  <tr><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">
  24  $aData</font>
  25  
  26  </td><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">
  27  ''</font>
  28  </td><td>Data to be displayed</td></tr>
  29  </table>
  30  
  31  <div style="font-weight:bold;font-family:arial;font-size:85%;">Description</div>This method creates a new instance of the AntiSpam challenge. When the anti-spam imga eis created it is possible to directly use a supplied data string that should be displayed.
  32  
  33  The data can also be added afterwards with a call to Set()&nbsp;<br>
  34   &nbsp; <div style="font-weight:bold;font-family:arial;font-size:85%;">See also</div><a href="AntiSpam.html#_ANTISPAM_SET">AntiSpam::Set</a> and <a href="AntiSpam.html#_ANTISPAM_RAND">AntiSpam::Rand</a>
  35  <div style="font-weight:bold;font-family:arial;font-size:85%;"><p>Example</div><span style="font-family:courier;font-size:85%;"><font color="#000000">
  36  $spam&nbsp;=&nbsp;new&nbsp;AntiSpam();</font>
  37  </span><br>
  38  <p>
  39  <p>&nbsp; <p> &nbsp; <span style='font-size:110%;'><a name="_ANTISPAM_RAND"><div style="border-top:solid black 2pt;background-color:lightblue;font-family:courier new;font-size:90%;font-weight:bold;"><b><font color="#000000">
  40  function&nbsp;Rand($aLen)</font>
  41  </b></div></a></span>
  42  
  43  <span style='font-family:arial;font-size:90%;'><i>Generate a random spam challenge string</i></span><p>
  44  
  45  <table cellspacing=0 style='border:black solid 1pt;' width=100%>
  46  <tr><th width=25%>Argument</th><th width=15%>Default</th><th width=60%>Description</th></tr>
  47  <tr><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">
  48  $aLen</font>
  49  
  50  </td><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'>&nbsp;</td><td>Sets the length of the generated string</td></tr>
  51  </table>
  52  
  53  <div style="font-weight:bold;font-family:arial;font-size:85%;">Description</div>Instead of specifying the string manually that should be used as a challenge the string can be automatically generated. This is done witha  call to the Rand() method. &nbsp;<br>
  54  
  55  <div style="font-weight:bold;font-family:arial;font-size:85%;"><p>Example</div><span style="font-family:courier;font-size:85%;"><font color="#000000">
  56  $antispam&nbsp;=&nbsp;new&nbsp;AntiSpam();
<br />$rval&nbsp;=&nbsp;$antispam-&gt;Rand();
<br />...
<br /></font>
  57  </span><br>
  58  <p>
  59  <p>&nbsp; <p> &nbsp; <span style='font-size:110%;'><a name="_ANTISPAM_SET"><div style="border-top:solid black 2pt;background-color:lightblue;font-family:courier new;font-size:90%;font-weight:bold;"><b><font color="#000000">
  60  function&nbsp;Set($aData)</font>
  61  </b></div></a></span>
  62  
  63  <span style='font-family:arial;font-size:90%;'><i>Set the spam challenge string</i></span><p>
  64  
  65  <table cellspacing=0 style='border:black solid 1pt;' width=100%>
  66  <tr><th width=25%>Argument</th><th width=15%>Default</th><th width=60%>Description</th></tr>
  67  <tr><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">
  68  $aData</font>
  69  
  70  </td><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'>&nbsp;</td><td>Spam challenge</td></tr>
  71  </table>
  72  
  73  <div style="font-weight:bold;font-family:arial;font-size:85%;">Description</div>This is an alternative way of specifying the AntiSpam string. This can also be specified in the initial creation of the ANtiSpam object ro be automatically generated with a call to the Rand() method&nbsp;<br>
  74   &nbsp; <div style="font-weight:bold;font-family:arial;font-size:85%;">See also</div><a href="AntiSpam.html#_ANTISPAM_RAND">AntiSpam::Rand</a>
  75  <div style="font-weight:bold;font-family:arial;font-size:85%;"><p>Example</div><span style="font-family:courier;font-size:85%;"><font color="#000000">
  76  $antispam&nbsp;=&nbsp;new&nbsp;AntiSpam();
<br />...
<br />$antispam-&gt;Set($mySpamVal);</font>
  77  </span><br>
  78  <p>
  79  <p>&nbsp; <p> &nbsp; <span style='font-size:110%;'><a name="_ANTISPAM_STROKE"><div style="border-top:solid black 2pt;background-color:lightblue;font-family:courier new;font-size:90%;font-weight:bold;"><b><font color="#000000">
  80  function&nbsp;Stroke($aStrokeFileName)</font>
  81  </b></div></a></span>
  82  
  83  <span style='font-family:arial;font-size:90%;'><i>Send the antispam image back to the browser</i></span><p>
  84  
  85  <table cellspacing=0 style='border:black solid 1pt;' width=100%>
  86  <tr><th width=25%>Argument</th><th width=15%>Default</th><th width=60%>Description</th></tr>
  87  <tr><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">
  88  $aStrokeFileName</font>
  89  
  90  </td><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">
  91  ""</font>
  92  </td><td>An optional file name</td></tr>
  93  </table>
  94  
  95  <div style="font-weight:bold;font-family:arial;font-size:85%;">Description</div>This sends the antispam image back to the browser or to an optional file named as the first and only argument.&nbsp;<br>
  96   &nbsp; <div style="font-weight:bold;font-family:arial;font-size:85%;">See also</div><a href="AntiSpam.html#_ANTISPAM_ANTISPAM">AntiSpam::AntiSpam</a> and <a href="AntiSpam.html#_ANTISPAM_RAND">AntiSpam::Rand</a>
  97  <div style="font-weight:bold;font-family:arial;font-size:85%;"><p>Example</div><span style="font-family:courier;font-size:85%;"><font color="#000000">
  98  $antispam&nbsp;=&nbsp;new&nbsp;AntiSpam();
<br />$rval&nbsp;=&nbsp;$antispam-&gt;Rand();
<br />...
<br />$antispam-&gt;Stroke()</font>
  99  </span><br>
 100  <p> <hr> <p>