正则表达式判断email和URL, 帮忙看看有没有要补充的._PHP教程

正则表达式判断email和URL, 帮忙看看有没有要补充的._PHP教程_编程技术

2013-12-25 09:49:59 [小大] 已经帮助：人解决问题

正则

<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>', $a);
echo htmlspecialchars($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>

（责任编辑：）