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<style type="text/css"><!--A:link {font-family: helvetica, arial, geneva, sans-serif; font-size: x-small; text-decoration: none; color: #0000ff}A:visited {font-family: helvetica, arial, geneva, sans-serif; font-size: x-small; text-decoration: none; color: #0000ff}A:hover {font-family: helvetica, arial, geneva, sans-serif; font-size: x-small; text-decoration: underline; color: #FF0000}th {font-family: helvetica, arial; color : blue; font-size:85%; background : lightgrey; border-right:black solid 1pt; border-bottom:black solid 1pt;}//--></style><hr><a name="_C_ANTISPAM"><div style="background-color:yellow;font-family:courier new;"></a>CLASS <b>AntiSpam</b></div><i>(Defined in: jpgraph_antispam.php : 545)</i><table border=1><tr><td> <a href="AntiSpam.html" style="font-family:arial;font-weight:bold;color:darkblue;">AntiSpam</a> </td></tr><tr><td valign=top> <a href="AntiSpam.html#_ANTISPAM_ANTISPAM">AntiSpam()</a> <br> <a href="AntiSpam.html#_ANTISPAM_RAND">Rand()</a> <br> <a href="AntiSpam.html#_ANTISPAM_SET">Set()</a> <br> <a href="AntiSpam.html#_ANTISPAM_STROKE">Stroke()</a> <br></td></tr></table> <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> <hr><span style="font-family:arial;font-size:120%;font-weight:bold;">Class Methods</span><hr><p><p> <p> <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">function AntiSpam($aData)</font></b></div></a></span><span style='font-family:arial;font-size:90%;'><i>Create a new ANtiSpam challenge image</i></span><p><table cellspacing=0 style='border:black solid 1pt;' width=100%><tr><th width=25%>Argument</th><th width=15%>Default</th><th width=60%>Description</th></tr><tr><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">$aData</font></td><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">''</font></td><td>Data to be displayed</td></tr></table><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.The data can also be added afterwards with a call to Set() <br> <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><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">$spam = new AntiSpam();</font></span><br><p><p> <p> <span style='font-size:110%;'><a name="_ANTISPAM_RAND"><div style="border-top:solid black 2pt;background-color:lightblue;font-family:courier new;font-size:90%;font-weight:bold;"><b><font color="#000000">function Rand($aLen)</font></b></div></a></span><span style='font-family:arial;font-size:90%;'><i>Generate a random spam challenge string</i></span><p><table cellspacing=0 style='border:black solid 1pt;' width=100%><tr><th width=25%>Argument</th><th width=15%>Default</th><th width=60%>Description</th></tr><tr><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">$aLen</font></td><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'> </td><td>Sets the length of the generated string</td></tr></table><div style="font-weight:bold;font-family:arial;font-size:85%;">Description</div>Instead of specifying the string manually that should be used as a challenge the string can be automatically generated. This is done witha call to the Rand() method. <br><div style="font-weight:bold;font-family:arial;font-size:85%;"><p>Example</div><span style="font-family:courier;font-size:85%;"><font color="#000000">$antispam = new AntiSpam(); <br />$rval = $antispam->Rand(); <br />... <br /></font></span><br><p><p> <p> <span style='font-size:110%;'><a name="_ANTISPAM_SET"><div style="border-top:solid black 2pt;background-color:lightblue;font-family:courier new;font-size:90%;font-weight:bold;"><b><font color="#000000">function Set($aData)</font></b></div></a></span><span style='font-family:arial;font-size:90%;'><i>Set the spam challenge string</i></span><p><table cellspacing=0 style='border:black solid 1pt;' width=100%><tr><th width=25%>Argument</th><th width=15%>Default</th><th width=60%>Description</th></tr><tr><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">$aData</font></td><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'> </td><td>Spam challenge</td></tr></table><div style="font-weight:bold;font-family:arial;font-size:85%;">Description</div>This is an alternative way of specifying the AntiSpam string. This can also be specified in the initial creation of the ANtiSpam object ro be automatically generated with a call to the Rand() method <br> <div style="font-weight:bold;font-family:arial;font-size:85%;">See also</div><a href="AntiSpam.html#_ANTISPAM_RAND">AntiSpam::Rand</a><div style="font-weight:bold;font-family:arial;font-size:85%;"><p>Example</div><span style="font-family:courier;font-size:85%;"><font color="#000000">$antispam = new AntiSpam(); <br />... <br />$antispam->Set($mySpamVal);</font></span><br><p><p> <p> <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">function Stroke($aStrokeFileName)</font></b></div></a></span><span style='font-family:arial;font-size:90%;'><i>Send the antispam image back to the browser</i></span><p><table cellspacing=0 style='border:black solid 1pt;' width=100%><tr><th width=25%>Argument</th><th width=15%>Default</th><th width=60%>Description</th></tr><tr><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">$aStrokeFileName</font></td><td style='border-right:black solid 1pt;font-family:courier;font-size:90%;font-weight:bold;'><font color="#000000">""</font></td><td>An optional file name</td></tr></table><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. <br> <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><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">$antispam = new AntiSpam(); <br />$rval = $antispam->Rand(); <br />... <br />$antispam->Stroke()</font></span><br><p> <hr> <p>