這個(gè)問題已經(jīng)在這里有了答案：????????????>????????????PHP in_array() / array_search() odd behaviour????????????????????????????????????2個(gè)
我正在嘗試調(diào)試編寫的腳本,并且有一個(gè)問題歸結(jié)為檢查(多維)資產(chǎn)數(shù)組中是否存在標(biāo)識符.我正在使用一個(gè)in_array函數(shù),該函數(shù)以遞歸方式搜索從this question獲得的結(jié)果.

這是函數(shù)：

function in_array_r($needle, $haystack, $strict = false) {
    foreach ($haystack as $item) {
        if (($strict ? $item === $needle : $item == $needle) || (is_array($item) && in_array_r($needle, $item, $strict))) {
            return true;
        }
    }
    return false;
}

我正在使用此數(shù)據(jù)：

針頭：“ B51MM36”
干草堆：(針對未美化的數(shù)組的道歉-找不到從var_export美化的方法)

$sedols = array ( 0 => array ( 'ipsid' => '72', 'buyList' => '1', 'sedol' => 'B8LFDR7', 'isin' => 'LU0827876409', 'currency' => NULL, 'hedged' => '0', 'acc' => '0', 'inst' => '0', 'description' => 'BlackRock European Long Only', 'nonUKsitus' => '0', 'reportingStatus' => '0', 'matchScore' => 0, ), 1 => array ( 'ipsid' => '72', 'buyList' => '1', 'sedol' => 'LU0827876151', 'isin' => 'LU0827876151', 'currency' => 'USD', 'hedged' => '1', 'acc' => '1', 'inst' => '0', 'description' => 'Blackrock European Long Only', 'nonUKsitus' => '0', 'reportingStatus' => '0', 'matchScore' => 0, ), 2 => array ( 'ipsid' => '72', 'buyList' => '1', 'sedol' => 'LU0406496546 ', 'isin' => 'LU0406496546 ', 'currency' => 'EUR', 'hedged' => '1', 'acc' => '1', 'inst' => '0', 'description' => 'Blackrock European Long Only', 'nonUKsitus' => '0', 'reportingStatus' => '0', 'matchScore' => 0, ), 3 => array ( 'ipsid' => '72', 'buyList' => '1', 'sedol' => 'LU0827876409', 'isin' => 'LU0827876409', 'currency' => 'GBP', 'hedged' => '1', 'acc' => '0', 'inst' => '0', 'description' => 'Blackrock European Long Only', 'nonUKsitus' => '0', 'reportingStatus' => '1', 'matchScore' => 1, ), );

當(dāng)我運(yùn)行var_dump(in_array_r(‘B51MM36’,$sedols));它輸出bool(true).我很困惑,因?yàn)樽址?B51MM36”沒有出現(xiàn)在干草堆數(shù)組中的任何位置.任何人都可以確定這里發(fā)生了什么嗎？

解決方法:

原因是

var_dump('B51MM36' == 0);

是真的,不知道為什么(也許將字符串轉(zhuǎn)換為整數(shù)),但是這項(xiàng)工作

var_dump(in_array_r('B51MM36', $sedols, true));

嘗試刪除嚴(yán)格的選項(xiàng)