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PHP code:
<?
$a='<input type="text" name="user"><input type="text" name="password">';

//ÎÒÒªÔõô²ÅÄÜ°ÑÕâ¸ö×Ö·û´®±äΪ
$a='<input type="text" name="user" value="$user"><input type="text" name="password" value="$password">';
?>


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ÔÚÏßµÈ ×Ô¼º¶¥ÏÂ...............

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Ö±½ÓÌæ»»º¯Êý¾ÍÐа¡str_replace

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PHP code:
<?

$a='<input type="text" name="user"><input type="text" name="password">';

$a='<input type="text" name="user" value="$user"><input type="text" name="password" value="$password">';

?>


ÊôÐÔnameµÄÖµÊÇvalueµÄÖµ±äÁ¿ Òª¶àÀí½âÏÂ

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PHP code:

$a='<input type="text" name="user"><input type="text" name="password">';

$a = preg_replace('/(\<input.+name=)([\'\"])(.+)[\'\"](.*\>)/Uis', "$1$2$3$2 value=\"\$$3\&qu