以下为引用的内容：
<body onload="f.a.select();">
<?php
echo 'a:'.htmlspecialchars($a);
echo '<br>a1:';
$a1 = eregi_replace('(^[_.][:alnum:]-]+@([[:alnum:]][[:alnum:]-]*.)+[[:alpha:]]{2,3}$)',' <a href="mailto:\1">\1</a> ', $a) ;
echo htmlspecialchars($a1);
echo "<br>a1:$a1";
echo '<br>a2:';
$a2 = eregi_replace('([[:alnum:]]+://([[:alnum:]][[:alnum:]-]*\.)+[[:alpha:]]{2,3}([#\?/\\][^#\?/\\][:space:]][^[:space:]]*)?)',
'<a href="\1" target="_blank">\1</a>', $a); php程序员之家
echo htmlspecialchars($a2);
echo "<br>a2:$a2";
// eregi('^[_.][:alnum:]-]+@([[:alnum:]][[:alnum:]-]*\.)+[[:alpha:]]{2,3}$',$a) or die("not a email");
?>
<form name="f">
<input name="a" value="<?php echo $a; ?>">
<input type="submit" >
</form>
</body> |
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