Question

我知道它有点愚蠢，但后面是什么，

// an array of some unknown items from the database
$array = ['item1','item2','item3'];

// i think it should be done with For loop but not sure how, so anyhow
// the loop should repeat (name contains '$item' and) for each item of the $array and put them in a query like below
foreach ($array as $item) {
    $query = [
        'q' => "name contains '$item1' and name contains '$item2' and name contains '$etc...'"
    ];
}

目前正在做的是一个接一个地进行查询，导致开销和大数组需要太长时间，所以我想在一个查询中将整个事情结合起来，这会大大减少时间。

Answer 1

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Answer 2

像这样的Somethig可以做到这一点：

$array = ['item1','item2','item3'];

// init $query as array
$query = [];
// init $query 'q' index as empty string
$query['q'] = '';

// then loop the array of items, and concat what you need    
foreach ($array as $item)
{
    $query['q'] .= " name contains '$item' and";
}

// remove whitespaces from start and end of the string
$query['q'] = trim($query['q']);
// remove the ' and' from the end of the string (0 = start of string, -4 = 4 before the end of the string)
$query['q'] = substr($query['q'], 0, -4);

这将返回：name contains 'item1' and name contains 'item2' and name contains 'item3'

Becare，这是一个简单的例子，你应该用empty($array)来测试数组包含至少一个项目的例子，substr将返回false（或者null，我不确定这个）

Answer 3

不需要until python data.py "$@" ; do：

foreach

但你要确保数组中有一些东西......： - ）

Answer 4

for($array as $item) {
   $query .= " AND name=$item";// Dont forget "."
}

循环遍历数组中的项目并将它们分散在php

4 个答案: