在阵列缓存Intersystems中找到一个值



我希望有人可以帮助我试图找到一种在像PHP in_array这样的数组中找到值的方法。

我有两个变量PTOWNADDRESS。我想找到PTOWN是否在数组中的任何地方?

您是否正在寻找if $data(ADDRESS("street 1")) write "found"

您是在键或节点的值中寻找PTOWN吗?如果可以在中找到PTOWN,则可以使用$订单找到与拥有的最接近的匹配。假设您有这样的数组:

new PTOWN,Address,Array
set PTOWN="Paris"
set Address="Some address"
;
set Array("Paris")="123 Avenue Louis Pasteur"
set Array("Madrid")="434 Calle De Duermos"
set Array("Boston")="1522 Market Street"
;
if $ORDER(Array(PTOWN))=PTOWN d
    ...

$订单将返回与您的搜索词最匹配的密钥,并且在腮腺炎的订购系统中也是在它之后进行的。因此,$ORDER(Array("Pa"))返回"巴黎",$ORDER(Array("Mad"))返回"马德里",$ORDER(Array("Alameda"))返回"波士顿",因为"波士顿"是阵列中" Alameda"之后的下一件事。

您也可以使用它在数组中的所有键上循环:

new nodeName
set nodeName="" ; you have to pass $ORDER "" to get the first thing in the array
;
for  set nodeName=$ORDER(Array(nodeName)) quit:nodeName=""  d 
    ; $ORDER returns "" when you pass it the *last* key in the array, so we can quit this loop when we get that back
    ;
    if nodeName=PTOWN write Array(nodeName)

如果在数组的值中找到PTOWN,则必须使用循环方法。

假设Ptown是'$针',并且地址为'$ Haystack'(根据IN_ARRAY文档(,并且不知道阵列格式,您可以做的最好的就是:

in_array(needle,haystack)
    NEW idx,found,subAry
    SET found=0 ; If you want to return 0 instead of "" if not found
    ;
    FOR $ORDER(haystack(idx)) QUIT:idx="" DO  QUIT:found
    . ; If the format of the array is: array(<index>)=<value>
    . IF haystack(idx)=needle SET found=1 QUIT
    . ;
    . ; If the format of the array is: array(<key>)=<value>
    . ; Note: this type of search can be made a bit more efficient, but we're brute-forcing here
    . IF idx=haystack SET found=1 QUIT
    . ;
    . ; If you're using nested keys and values...this is NOT recommended since Cache doesn't really support recursion
    . MERGE subAry=haystack(idx)
    . SET found=$$in_array(needle,subAry)
    ;
    QUIT found

您会这样称呼:

...=$$in_array(PTOWN,.ADDRESS) ; Don't forget to pass by reference!

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