I know this question is asked numerous number of time and I have searched enough to find my results but didnt get success so far.
我知道这个问题被问了很多次，我搜索了很多次才找到了结果，但是到目前为止还没有成功。
Let say I have this type of array:
假设我有这种类型的数组:
1 ~~~
1 ###
Array ( [macro_ratio] => 1.1 [foodCategoryId] => 37 ) @@@
2 ###
Array ( [macro_ratio] => 1.2 [foodCategoryId] => 2 ) @@@
3 ###
Array ( [macro_ratio] => 1.3 [foodCategoryId] => 3 ) @@@
4 ###
Array ( [macro_ratio] => [foodCategoryId] => 4 ) @@@
5 ###
Array ( [macro_ratio] => [foodCategoryId] => 5 ) @@@
6 ###
Array ( [macro_ratio] => [foodCategoryId] => 6 ) @@@
7 ###
Array ( [macro_ratio] => [foodCategoryId] => 7 ) @@@
8 ###
Array ( [macro_ratio] => [foodCategoryId] => 8 ) @@@
9 ###
Array ( [macro_ratio] => [foodCategoryId] => 9 ) @@@
10 ###
Array ( [macro_ratio] => [foodCategoryId] => 38 ) @@@
11 ###
Array ( [macro_ratio] => [foodCategoryId] => 10 ) @@@
12 ###
Array ( [macro_ratio] => [foodCategoryId] => 11 ) @@@
13 ###
Array ( [macro_ratio] => [foodCategoryId] => 12 ) @@@
14 ###
Array ( [macro_ratio] => [foodCategoryId] => 13 ) @@@
15 ###
Array ( [macro_ratio] => [foodCategoryId] => 14 ) @@@
16 ###
Array ( [macro_ratio] => [foodCategoryId] => 15 ) @@@
17 ###
Array ( [macro_ratio] => [foodCategoryId] => 16 ) @@@
18 ###
Array ( [macro_ratio] => [foodCategoryId] => 17 ) @@@
19 ###
Array ( [macro_ratio] => [foodCategoryId] => 39 ) @@@
20 ###
Array ( [macro_ratio] => [foodCategoryId] => 18 ) @@@
21 ###
Array ( [macro_ratio] => [foodCategoryId] => 19 ) @@@
22 ###
Array ( [macro_ratio] => [foodCategoryId] => 20 ) @@@
23 ###
Array ( [macro_ratio] => [foodCategoryId] => 21 ) @@@
24 ###
Array ( [macro_ratio] => [foodCategoryId] => 22 ) @@@
25 ###
Array ( [macro_ratio] => [foodCategoryId] => 23 ) @@@
26 ###
Array ( [macro_ratio] => [foodCategoryId] => 24 ) @@@
27 ###
Array ( [macro_ratio] => [foodCategoryId] => 25 ) @@@
28 ###
Array ( [macro_ratio] => [foodCategoryId] => 40 ) @@@
29 ###
Array ( [macro_ratio] => [foodCategoryId] => 41 ) @@@
30 ###
Array ( [macro_ratio] => [foodCategoryId] => 26 ) @@@
31 ###
Array ( [macro_ratio] => [foodCategoryId] => 27 ) @@@
32 ###
Array ( [macro_ratio] => [foodCategoryId] => 28 ) @@@
33 ###
Array ( [macro_ratio] => [foodCategoryId] => 29 ) @@@
34 ###
Array ( [macro_ratio] => [foodCategoryId] => 30 ) @@@
35 ###
Array ( [macro_ratio] => [foodCategoryId] => 34 ) @@@
36 ###
Array ( [macro_ratio] => [foodCategoryId] => 35 ) @@@
37 ###
Array ( [macro_ratio] => [foodCategoryId] => 36 ) @@@
2 ~~~
1 ###
Array ( [macro_ratio] => 2.1 [foodCategoryId] => 37 ) @@@
2 ###
Array ( [macro_ratio] => 2.2 [foodCategoryId] => 2 ) @@@
3 ###
Array ( [macro_ratio] => 2.3 [foodCategoryId] => 3 ) @@@
4 ###
Array ( [macro_ratio] => [foodCategoryId] => 4 ) @@@
5 ###
Array ( [macro_ratio] => [foodCategoryId] => 5 ) @@@
6 ###
Array ( [macro_ratio] => [foodCategoryId] => 6 ) @@@
7 ###
Array ( [macro_ratio] => [foodCategoryId] => 7 ) @@@
8 ###
Array ( [macro_ratio] => [foodCategoryId] => 8 ) @@@
9 ###
Array ( [macro_ratio] => [foodCategoryId] => 9 ) @@@
10 ###
Array ( [macro_ratio] => [foodCategoryId] => 38 ) @@@
11 ###
Array ( [macro_ratio] => [foodCategoryId] => 10 ) @@@
12 ###
Array ( [macro_ratio] => [foodCategoryId] => 11 ) @@@
13 ###
Array ( [macro_ratio] => [foodCategoryId] => 12 ) @@@
14 ###
Array ( [macro_ratio] => [foodCategoryId] => 13 ) @@@
15 ###
Array ( [macro_ratio] => [foodCategoryId] => 14 ) @@@
16 ###
Array ( [macro_ratio] => [foodCategoryId] => 15 ) @@@
17 ###
Array ( [macro_ratio] => [foodCategoryId] => 16 ) @@@
18 ###
Array ( [macro_ratio] => [foodCategoryId] => 17 ) @@@
19 ###
Array ( [macro_ratio] => [foodCategoryId] => 39 ) @@@
20 ###
Array ( [macro_ratio] => [foodCategoryId] => 18 ) @@@
21 ###
Array ( [macro_ratio] => [foodCategoryId] => 19 ) @@@
22 ###
Array ( [macro_ratio] => [foodCategoryId] => 20 ) @@@
23 ###
Array ( [macro_ratio] => [foodCategoryId] => 21 ) @@@
24 ###
Array ( [macro_ratio] => [foodCategoryId] => 22 ) @@@
25 ###
Array ( [macro_ratio] => [foodCategoryId] => 23 ) @@@
26 ###
Array ( [macro_ratio] => [foodCategoryId] => 24 ) @@@
27 ###
Array ( [macro_ratio] => [foodCategoryId] => 25 ) @@@
28 ###
Array ( [macro_ratio] => [foodCategoryId] => 40 ) @@@
29 ###
Array ( [macro_ratio] => [foodCategoryId] => 41 ) @@@
30 ###
Array ( [macro_ratio] => [foodCategoryId] => 26 ) @@@
31 ###
Array ( [macro_ratio] => [foodCategoryId] => 27 ) @@@
32 ###
Array ( [macro_ratio] => [foodCategoryId] => 28 ) @@@
33 ###
Array ( [macro_ratio] => [foodCategoryId] => 29 ) @@@
34 ###
Array ( [macro_ratio] => [foodCategoryId] => 30 ) @@@
35 ###
Array ( [macro_ratio] => [foodCategoryId] => 34 ) @@@
36 ###
Array ( [macro_ratio] => [foodCategoryId] => 35 ) @@@
37 ###
Array ( [macro_ratio] => [foodCategoryId] => 36 ) @@@
From that array I want to omit/skip Array ( [macro_ratio] => [foodCategoryId] => 36 ) @@@ sort of elements means if [macro_ratio] => empty so I want to skip that whole element of array.
从这个数组中，我想省略/跳过数组([macro_ratio] => [foodCategoryId] => 36) @@@类型的元素意味着如果[macro_ratio] => empty，那么我想跳过数组的整个元素。
The code I am working on is:
我正在编写的代码是:
foreach ($_POST['mealData'] as $key => $value) {
print_r($key);
echo " ~~~<br>";
foreach ($value as $key => $value) {
print_r($key);
echo " ###<br>";
print_r($value);
echo " @@@<br>";
if (isset($value['macro_ratio']) === true && empty($value['macro_ratio']) === true && isset($value['foodCategoryId']) === true && empty($value['foodCategoryId']) === true) {
print_r($value);
}
}
}
4 个解决方案
#1
1
Both macro_ratio and foodCategoryId are keys, you can access then after the first loop. The if statement will check if macro_ratio is set and not empty. change your code to this and it should work
macro_ratio和foodCategoryId都是键，您可以在第一个循环之后访问它们。if语句将检查是否设置了macro_ratio而不是empty。将您的代码更改为这个，它应该可以工作
$data = array( // first loop to access this level
array( // second loop to access this level,
'macro_ratio' => 1.2 // check if index macro_ratio is set and not empty
'foodCategoryId' => 2 ),
array(
'macro_ratio' => 2
'foodCategoryId' => 4 )
)
foreach ($_POST['mealData'] as $k1 => $v1) {
foreach ($value as $k2 => $v2) {
check if index macro_ratio is set and not empty
if ( isset($value2['macro_ratio']) && !empty($value2['macro_ratio']) ) {
echo $value2['foodCategoryId'];
}
}
}
#2
1
Try this if it works
如果可行的话，试试这个
foreach ($_POST['mealData'] as $key => $value) {
print_r($key);
echo " ~~~<br>";
if(!empty($value['macro_ratio'])){
foreach($value as $key2 => $value2) {
print_r($value2);
}
}
}
#3
1
Hope this works... this is the simplest way.
希望这个工作…这是最简单的方法。
<?php
$result = array();
foreach ($_POST['mealData'] as $key => $value){
if( empty($value["macro_ratio"]) )
continue;
else
$result[$key] = $value;
}
var_dump($result);
#4
1
This is an alternative way of doing it. Filtering the array before the foreach loop. array_filter with a custom callback will do this.
这是另一种方法。在foreach循环之前过滤数组。使用自定义回调的array_filter将执行此操作。
This will return a filtered array by checking every element in the array to make sure the length of ['macro_ratio'] is greater than 0. Using strlen instead of empty will still allow values of 0.
通过检查数组中的每个元素以确保['macro_ratio']的长度大于0，这将返回一个过滤后的数组。使用strlen而不是empty仍然允许值为0。
$filteredArray = array_filter($array, function($value) {
return (strlen($value['macro_ratio']));
});
#1
1
Both macro_ratio and foodCategoryId are keys, you can access then after the first loop. The if statement will check if macro_ratio is set and not empty. change your code to this and it should work
macro_ratio和foodCategoryId都是键，您可以在第一个循环之后访问它们。if语句将检查是否设置了macro_ratio而不是empty。将您的代码更改为这个，它应该可以工作
$data = array( // first loop to access this level
array( // second loop to access this level,
'macro_ratio' => 1.2 // check if index macro_ratio is set and not empty
'foodCategoryId' => 2 ),
array(
'macro_ratio' => 2
'foodCategoryId' => 4 )
)
foreach ($_POST['mealData'] as $k1 => $v1) {
foreach ($value as $k2 => $v2) {
check if index macro_ratio is set and not empty
if ( isset($value2['macro_ratio']) && !empty($value2['macro_ratio']) ) {
echo $value2['foodCategoryId'];
}
}
}
#2
1
Try this if it works
如果可行的话，试试这个
foreach ($_POST['mealData'] as $key => $value) {
print_r($key);
echo " ~~~<br>";
if(!empty($value['macro_ratio'])){
foreach($value as $key2 => $value2) {
print_r($value2);
}
}
}
#3
1
Hope this works... this is the simplest way.
希望这个工作…这是最简单的方法。
<?php
$result = array();
foreach ($_POST['mealData'] as $key => $value){
if( empty($value["macro_ratio"]) )
continue;
else
$result[$key] = $value;
}
var_dump($result);
#4
1
This is an alternative way of doing it. Filtering the array before the foreach loop. array_filter with a custom callback will do this.
这是另一种方法。在foreach循环之前过滤数组。使用自定义回调的array_filter将执行此操作。
This will return a filtered array by checking every element in the array to make sure the length of ['macro_ratio'] is greater than 0. Using strlen instead of empty will still allow values of 0.
通过检查数组中的每个元素以确保['macro_ratio']的长度大于0，这将返回一个过滤后的数组。使用strlen而不是empty仍然允许值为0。
$filteredArray = array_filter($array, function($value) {
return (strlen($value['macro_ratio']));
});