php獲取四位字母和數字的隨機數的實現方法
阿新 • • 發佈:2018-03-22
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<?php
function
GetfourStr(
$len
)
{
$chars_array
=
array
(
"0"
,
"1"
,
"2"
,
"3"
,
"4"
,
"5"
,
"6"
,
"7"
,
"8"
,
"9"
,
"a"
,
"b"
,
"c"
,
"d"
,
"e"
,
"f"
,
"g"
,
"h"
,
"i"
,
"j"
,
"k"
,
"l"
,
"m"
,
"n"
,
"o"
,
"p"
,
"q"
,
"r"
,
"s"
,
"t"
,
"u"
,
"v"
,
"w"
,
"x"
,
"y"
,
"z"
,
"A"
,
"B"
,
"C"
,
"D"
,
"E"
,
"F"
,
"G"
,
"H"
,
"I"
,
"J"
,
"K"
,
"L"
,
"M"
,
"N"
,
"O"
,
"P"
,
"Q"
,
"R"
,
"S"
,
"T"
,
"U"
,
"V"
,
"W"
,
"X"
,
"Y"
,
"Z"
,
);
$charsLen
=
count
(
$chars_array
) - 1;
$outputstr
=
""
;
for
(
$i
=0;
$i
<
$len
;
$i
++)
{
$outputstr
.=
$chars_array
[mt_rand(0,
$charsLen
)];
}
return
$outputstr
;
}
echo
GetfourStr(4);
?>
php獲取四位字母和數字的隨機數的實現方法