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PHP Á¤±Ô½Ä À¯È¿¼º°Ë»ç ¿¹Á¦ (IDüũ, À̸ÞÀÏüũµî)
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//id¸¦ 5~10ÀÚÀÇ ¿µ¹®À̳ª ¼ýÀÚ¸¸ Çã¿ë


if(!ereg("[[:alnum:]+]{5,10}",$id)) {
   echo "<script>
               alert('ID´Â 5~10ÀÚÀÇ ¿µ¹®ÀÚ³ª ¼ýÀÚÀÇ Á¶ÇÕÀ̾î¾ß ÇÕ´Ï´Ù!!');
      history.back(-1);
    </script>";
   exit();
}



// passwd¸¦ 4~8ÀÚÀÇ ¿µ¹®À̳ª ¼ýÀÚ¸¸ Çã¿ë


if(!ereg("[[:alnum:]+]{4,8}",$passwd)) {
   echo "<script>
               alert('ºñ¹Ð¹øÈ£´Â 4~8ÀÚÀÇ ¿µ¹®ÀÚ³ª ¼ýÀÚÀÇ Á¶ÇÕÀ̾î¾ß ÇÕ´Ï´Ù!!');
      history.back(-1);
    </script>";
   exit();
}



//ÀÔ·ÂµÈ À̸ÞÀÏÀÇ À¯È¿¼º°Ë»ç


if(!ereg("(^[_0-9a-zA-Z-]+(\.[_0-9a-zA-Z-]+)*@[0-9a-zA-Z-]+(\.[0-9a-zA-Z-]+)*$)", $email)) {
   echo "<script>
               alert('À̸ÞÀÏÁÖ¼Ò°¡ À߸øµÅ¾ú½À´Ï´Ù\n\nÁ¤È®ÇÏ°Ô ÀÔ·ÂÇØ ÁÖ¼¼¿ä!!');
      history.back(-1);
    </script>";
   exit();
}



// ÀÔ·ÂµÈ È¨ÆäÀÌÁöÀÇ À¯È¿¼º °Ë»ç


if(ereg("([^[:space:]]+)", $homepage) && (!ereg("http://([0-9a-zA-Z./@~?&=_]+)", $homepage))  ) {
   echo "<script>
               alert('ȨÆäÀÌÁö ÁÖ¼Ò°¡ Çü½Ä¿¡ ¸ÂÁö ¾Ê½À´Ï´Ù!!');
      history.back(-1);
    </script>";
   exit();
}



//name¿¡ °ø¹é(space)ÀÌ ÀÖ´Â°Ç Çã¿ëÇÏÁö ¾ÊÀ½


if(!ereg("([^[:space:]]+)", $name) || ereg("([[:space:]]+)",$name)) {
   echo "<script>
               alert('À̸§¿¡ °ø¹éÀÌ Á¸ÀçÇÕ´Ï´Ù!!\n\nÀ̸§À» °ø¹é¾øÀÌ ÀÔ·ÂÇϼ¼¿ä!!');
      history.back(-1);
    </script>";
   exit();
}



// nameÀÌ ÇѱÛÀÏ °æ¿ì¸¸ Çã¿ë


for($i = 0; $i < strlen($name); $i++) {
   if(ord($name[$i]) <= 0x80) {
   echo "<script>
               alert('À̸§Àº ¹Ýµå½Ã ÇѱÛÀ̾î¾ß ÇÕ´Ï´Ù!!');
      history.back(-1);
    </script>";
      exit();
   }
}
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PHP - $ SERVER ȯ°æº¯¼ö
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