[英]Count values based on multiple key values in php
我在php中有一个result array
。 我想基于多个键值来计算值。 例如:
我要计算属于“ fromcity” =>拉合尔和“ tocity” => Sahiwal的所有离开
同样,所有其他城市和城市出发人数也一样。
就像按声明分组。
请帮助我。
我在php中有以下结果数组:
$result_array = array
(
[0] => array
(
"id" => "348",
"departure" => "00:00:00",
"fromcity" => "Lahore",
"tocity" => "Buhawalpur"
)
[1] => array
(
"id" => "531",
"departure" => "00:00:00",
"fromcity" => "Lahore",
"tocity" => "Murree"
)
[2] => array
(
"id" => "532",
"departure" => "00:00:00",
"fromcity" => "Lahore",
"tocity" => "Rawalpindi"
)
[3] => array
(
"id" => "581",
"departure" => "00:00:00",
"fromcity" => "Lahore",
"tocity" => "Multan"
)
[4] => array
(
"id" => "582",
"departure" => "00:00:00",
"fromcity" => "Lahore",
"tocity" => "Sahiwal"
)
[5] => array
(
"id" => "528",
"departure" => "00:05:00",
"fromcity" => "Lahore",
"tocity" => "Sahiwal"
)
[6] => array
(
"id" => "1584",
"departure" => "00:15:00",
"fromcity]" => "Lahore",
"tocity]"=> "Multan"
)
[7] => array
(
"id" => "1586",
"departure" => "00:15:00",
"fromcity"=> "Lahore",
"tocity" => "Sahiwal"
)
[8] => array
(
"id" => "349",
"departure" => "01:00:00",
"fromcity" => "Lahore",
"tocity" => "Multan"
)
[9] => array
(
"id" => "529",
"departure" => "01:00:00",
"fromcity" => "Lahore",
"tocity" => "Sahiwal"
)
[10] => array
(
"id" => "906",
"departure" => "01:00:00",
"fromcity" => "Lahore",
"tocity" => "Rawalpindi"
)
[11] => array
(
"id" => "685",
"departure" => "01:45:00",
"fromcity" => "Lahore",
"tocity" => "Rawalpindi"
)
[12] => array
(
"id" => "350",
"departure" => "02:00:00",
"fromcity" => "Lahore",
"tocity" => "Multan"
)
[13] => array
(
"id" => "530",
"departure" => "02:00:00",
"fromcity" => "Lahore",
"tocity" => "Sahiwal"
)
[14] => array
(
"id" => "907",
"departure" => "02:30:00",
"fromcity" => "Lahore",
"tocity" => "Rawalpindi"
)
[15] => array
(
"id" => "736",
"departure" => "03:15:00",
"fromcity" => "Lahore",
"tocity" => "Sahiwal"
)
[16] => array
(
"id" => "908",
"departure" => "05:30:00",
"fromcity" => "Lahore",
"tocity" => "Rawalpindi"
)
[17] => array
(
"id" => "1649",
"departure" => "05:30:00",
"fromcity"=> "Lahore",
"tocity" => "Faislabad"
)
[18] => array
(
"id" => "331",
"departure" => "06:00:00",
"fromcity" => "Lahore",
"tocity" => "Multan"
)
[19] => array
(
"id" => "438",
"departure" => "06:00:00",
"fromcity" => "Lahore",
"tocity" => "Sialkot"
)
[20] => array
(
"id" => "447",
"departure" => "06:00:00",
"fromcity" => "Lahore",
"tocity" => "Daska"
)
)
您必须自己实现。 只需遍历$result_array
并计算所需数量:
$counter = 0;
foreach($result_array as $item) {
if($item['fromcity'] == 'Lahore' and $item['tocity'] == 'Sahiwal') {
$counter++;
}
}
echo "My current count is " . $counter;
您可能想实现一个只返回计数器的计数函数。
如果要基于fromcity
和tocity
,可以执行以下操作:
$count = [];
foreach($result_array as $element) {
$search = $element['fromcity']. '-'. $element['tocity'];
if(!isset($count[$search])) {
$count[$search] = 1;
} else {
$count[$search] += 1;
}
}
//Result:
foreach($count as $name => $cnt) {
echo $name.' - '. $cnt .PHP_EOL;
}
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