php 带有索引和键的php array_push
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php array_push with index and key
提问by user1269625
I am not sure if I got the terms right in my title, but I am trying to do a php array_pushlike so
我不确定我的标题中的条款是否正确，但我正在尝试做一个array_push像这样的 php
array_push($countryList, "US" => "United States");
but this gives me a syntax error.
但这给了我一个语法错误。
Am I not doing this properly?
我这样做不正确吗？
采纳答案by eL-Prova
Adding like
添加喜欢
$countryList["US"] = "United States";
Pushing a value into an array automatically creates a numeric key for it.
将值推入数组会自动为其创建一个数字键。
When adding a key-value pair to an array, you already have the key, you don't need one to be created for you. Pushing a key into an array doesn't make sense. You can only set the value of the specific key in the array.
将键值对添加到数组时，您已经拥有键，不需要为您创建键。将键推入数组没有意义。您只能设置数组中特定键的值。
// no key
array_push($array, $value);
// same as:
$array[] = $value;
// key already known
$array[$key] = $value
;
;
回答by Faizan Noor
If you want to push a value with key in an array then you may use the following function:
如果要使用数组中的键推送值，则可以使用以下函数：
function array_push_assoc($array, $key, $value){
$array[$key] = $value;
return $array;
}
Usage: $array= array_push_assoc($array, 'US', 'United States');
回答by Jong Yun Kim
Try using this array merge method :
尝试使用此数组合并方法：
$countryList = array_merge($countryList, array("US" => "United States"));
回答by Vincent MAURY
Refer to online php doc ...
参考在线php文档...
"US" => "United States" is not a var !
"US" => "United States" 不是 var ！
