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1. PHP¿ÉÔĶÁËæ»ú×Ö·û´®
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/**************
*@length - length of random string (must be a multiple of 2)
**************/
function readable_random_string($length = 6){
$conso=array("b","c","d","f","g","h","j","k","l",
"m","n","p","r","s","t","v","w","x","y","z");
$vocal=array("a","e","i","o","u");
$password="";
srand ((double)microtime()*1000000);
$max = $length/2;
for($i=1; $i<=$max; $i++){
$password.=$conso[rand(0,19)];
$password.=$vocal[rand(0,4)];
}
return $password;
}

2. PHPÉú³ÉÒ»¸öËæ»ú×Ö·û´®
Èç¹û²»ÐèÒª¿ÉÔĶÁµÄ×Ö·û´®£¬Ê¹Óô˺¯ÊýÌæ´ú£¬¼´¿É´´½¨Ò»¸öËæ»ú×Ö·û´®£¬×÷ΪÓû§µÄËæ»úÃÜÂëµÈ¡£
/*************
*@l - ......

phpѧϰ֪ʶµã

1.call_user_func º¯ÊýÀàËÆÓÚÒ»ÖÖÌØ±ðµÄµ÷Óú¯ÊýµÄ·½·¨£¬Ê¹Ó÷½·¨ÈçÏÂ:
function a($b,$c)
{
   echo $b;
   echo $c;
}
call_user_func('a','111','222');
call_user_func('a','333','444');
//ÏÔʾ111222333444
µ÷ÓÃÀàÄÚ²¿µÄ·½·¨±È½ÏÆæ¹Ö£¬ÓõÄÊÇarray,Óëphp5µÄ¾²Ì¬·½·¨Ïàͬ£¬¼´µÈͬÓÚclass:function
class a{
  function b($c){
     echo $c;
  }
}
call_user_func(array("a","b"),"1111");
//Êä³ö1111
2.array_fill()º¯Êý½«¸øº¯Êý¸³ÉÏÄãËùÉ趨µÄÖµ¡£
Example:
$a=array_fill(2,3,"Dog");
print_r($a);
//Êä³ö½á¹û:Array ( [2] => Dog [3] => Dog [4] => Dog )
3.µÑ¿¨¶û»ýËã·¨:
$a[0] = array(1, 2, 3, 4);
$a[1] = array(5, 6, 7);
$a[2] = array(8, 9);
$index = array_fill(0, count($a), 0);
while ($index[0] < count($a[0])) {
    $temp = '';
    for ($i = 0; $i < count($index); ++$i) {
        $temp .= $a[$i][$index[$i]];
    }
    echo $temp, ' ......

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