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$a = 1;
include "b.inc";
?> 
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<?php
$a = 1; /* global scope */
function Test()
{
   echo $a; /* reference to local scope variable */
}
Test();
?> 
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$a = 1;
$b = 2;
function Sum()
{
   global $a, $b;
   $b = $a + $b;
}
Sum();
echo $b;
?> 
 
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<?php
$a = 1;
$b = 2;
function Sum()
{
   $GLOBALS["b"] = $GLOBALS["a"] + $GLOBALS["b"];
}
Sum();
echo $b;
?> 
 
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PHP mail Function With Attachments

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This code sends an html formatted email with attachments. This email sending script actually sends both a plaintext and an html body of the email, allowing the email client to choose which to display. The plaintext emai ......

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http://www.juqng.com/articles/php/php-kai-fa-kuang-jia-jie-shao/
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