Question

我有一个数组从查询返回，但我想将其更改为另一个数据库查询的字符串

$test = $go->get_stuff();
$test = array(
    'ONE',
    'TWO',
    'THREE',
    'FOUR'
)

// expected outcome
$sql .= "(table.col IN ('ONE', 'TWO', 'THREE', 'FOUR') OR table.col IS NULL)";

Answer 1

使用implode()但同时也要确保前缀和附加单引号：

$string = "'" . implode("','", $test) . "'";
// 'ONE', 'TWO', 'THREE', 'FOUR'

Answer 2

此问题已在此处得到解答：How to convert array to a string using methods other than JSON?

基本上，您需要使用implode function作为数据集。

$test = $go->get_stuff();
$test = array(
    'ONE',
    'TWO',
    'THREE',
    'FOUR'
)

// Implode array to string
$string = "'" . implode("','", $test) . "'";
// Deliver desired output
$sql .= "(table.col IN (".$string.") OR table.col IS NULL)";

Answer 3

内爆数组：

$str = "'" . implode("', '", $test) . "'";

然后你可以将它添加到你的SQL：

$sql .= "(table.col IN ($str) OR table.col IS NULL)";

Answer 4

使用implode()。试试这个..

$in = "'".implode("','", $test)."'";
$sql .= "(table.col IN (".$in.") OR table.col IS NULL)";

Answer 5

另一种方式是foreach和rtrim： foreach($test as $v) { $str .= "'$v',"; } $str = rtrim($str, ',');

Answer 6

你可以用“内爆”功能来做到这一点。

试试这个：

$test = $go->get_stuff();
$test = array(
    'ONE',
    'TWO',
    'THREE',
    'FOUR'
)

// expected outcome
$sql .= "(table.col IN ('".implode("','", $test)."') OR table.col IS NULL)";

PHP将数组更改为字符串

6 个答案: