[英]Convert string name into variable in php?
I'm trying to create a function in php that will convert 3 strings into an element in a multidimensional array. 我正在尝试在php中创建一个函数,该函数会将3个字符串转换为多维数组中的元素。 So the array at the moment is this: 所以目前的数组是这样的:
`$testcart=[$testcamera = [
'name' => 'Sony camera',
'price' => 170
]
];
$phone = [
'name' => 'Lg g3',
'price' => 400
];'
And I'm trying to add this element to it through a form: 我正在尝试通过表单将其添加到其中:
`$smartphone = [
'name' => 'HTC One',
'price' => 300
];`
So the user inputs 'smartphone,'htc one', and 300. I've created this function: 因此,用户输入了“智能手机”,“ htc one”和300。我创建了以下功能:
function newcreate_item($newitemvariable,$newitemname,$newitemprice) {
$newitem = "$" . $newitemvariable;
$newitem = [
'name' =>$newitemname,
'price' =>$newitemprice];
return $newitem;
}
But I cannot seem to convert the string ($newitemvariable) into the variable name. 但是我似乎无法将字符串($ newitemvariable)转换为变量名。 Any help would be much appreciated! 任何帮助将非常感激!
Except it is quite risky and not professional to do so the right function to use is eval(): 除非这样做相当冒险且不专业,所以使用的正确函数是eval():
php -a
Interactive mode enabled
php > $str = '$testcart=[
php ' [
php ' \'name\' => \'Sony camera\',
php ' \'price\' => 170
php ' ],
php ' [
php ' \'name\' => \'Lg g3\',
php ' \'price\' => 400
php '
php ' ]];';
php > eval($str);
php > var_dump($testcart);
array(2) {
[0]=>
array(2) {
["name"]=>
string(11) "Sony camera"
["price"]=>
int(170)
}
[1]=>
array(2) {
["name"]=>
string(5) "Lg g3"
["price"]=>
int(400)
}
}
php >
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