[英]How to convert a string of numbers to an array
I have a pretty big JavaScript array with integers between -10 and 10. I want to save those in a database, so I have to send them to PHP using the jQuery $.post function; 我有一个非常大的JavaScript数组,整数介于-10和10之间。我想将它们保存在数据库中,所以我必须使用jQuery $ .post函数将它们发送到PHP; however, the array is too big, so I converted the array to a string in JavaScript.
但是,数组太大,所以我将数组转换为JavaScript中的字符串。 I want to convert it back to an array of integers in PHP.
我想将它转换回PHP中的整数数组。 How can I do this?
我怎样才能做到这一点?
This is my code, so far: 这是我的代码,到目前为止:
function updateDb(){
for(i = 0; i < inputSquares.length; i++) {
for(j = 0; j <= 9; j++) {
perceptronsWeights[10*i+j] = inputSquares[i].weights[j]
};
};
var pws = String(perceptronsWeights);
alert(typeof pws);
$.post("updateDatabase.php", {size: size, weights:pws}).done (
function(data) {
alert (data);
}
)
And, in my PHP file, I use: 并且,在我的PHP文件中,我使用:
$weightsString = $_POST['weights'];
$pws = array_map("intval", explode(",", $weightsArray));
echo $pws;
I have also tried explode()
without array_map
and str_split
, but both of them give me this error: 我也试过没有
array_map
和str_split
explode()
,但是它们都给了我这个错误:
Notice: Array to string conversion in
注意:数组转换为字符串
C:\\xampp\\htdocs\\ANN_JS\\updateDatabase.php on line 19第19行的C:\\ xampp \\ htdocs \\ ANN_JS \\ updateDatabase.php
Array排列
Line 19 is echo $pws;
第19行是
echo $pws;
. 。
使用print_r($pws)
打印array
use print_r
or var_dump
for echoing the array details for $pws. 使用
print_r
或var_dump
来回显$ pws的数组细节。 If you want through echo
then try 如果你想通过
echo
然后尝试
`echo implode(" ",$pws);`
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