在PHP数组中更改索引
大家好,在PHP数组中更改索引,php,arrays,indexing,foreach,Php,Arrays,Indexing,Foreach,大家好, [1] => Array ( [0] => joe [1] => male [2] => 24 [3] => 157 [4] => 166 ) [2] => Array ( [0] => bea [1] =&
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
$file = Storage::get('upload/test.txt');
$lines = explode('\n', $file);
$array = array_map(function($line) {
return explode(',', $line);
}, $lines);
print_r($array);
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
提前感谢！：）一个可能的解决方案是创建一个新数组，循环当前数组并添加索引：
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
$new_array = array();
foreach ($array as $element) {
$new_array[] = array(
'name' => $element[0],
'sex' => $element[1],
'age' => $element[2],
'height' => $element[3],
'weight' => $element[4]
);
$i++;
}
您需要一个关联数组
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
$newArray = []; // create a new empty array to store your associative arrays.
// Loop through each element in array.
foreach($array as $aPerson) {
// map each element in array into an associative array.
$person = [
"name" => $aPerson[0],
"sex" => $aPerson[1],
"age" => $aPerson[2],
"height" => $aPerson[3],
"weight" => $aPerson[4]
];
// Add your associative array to your new re-indexed array.
array_push($newArray, $person);
}
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
print_r($newArray);
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
$arr = [
['joe','male',24,157,166]
];
#mind the & pass by refrence
foreach($arr as &$item){
$item = array_combine(['name','sex','age','height','weight'],$item);
}
print_r($arr);
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
Array
(
[0] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
)
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
array\u combine [1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
以下是我将如何实现您想要实现的目标
[1] => Array
(
[0] => joe
[1] => male
[2] => 24
[3] => 157
[4] => 166
)
[2] => Array
(
[0] => bea
[1] => female
[2] => 18
[3] => 153
[4] => 160
)
[3] => Array
(
[0] => edd
[1] => male
[2] => 30
[3] => 180
[4] => 180
)
)
[1] => Array
(
[name] => joe
[sex] => male
[age] => 24
[height] => 157
[weight] => 166
)
[2] => Array
(
[name] => bea
[sex] => female
[age] => 18
[height] => 153
[weight] => 160
)
[3] => Array
(
[name] => edd
[sex] => male
[age] => 30
[height] => 180
[weight] => 180
)
)
<?php
$fp = @fopen('upload/test.txt', 'r'); $props = ['name', 'sex', 'age', 'height', 'weight']; $r = [];
if($fp) {
while(($line = fgets($fp)) !== false) {
$x = explode(',', $line); $a = [];
foreach($props as $k => $v){
$a[$v] = $x[$k];
}
$r[] = $a;
}
fclose($fp);
}
print_r($r);
?>
@jediArvin尝试时发生了什么？