php json_encode strange problem explanation_PHP tutorial

json_encode only supports utf-8 format. I won’t say much about this

Copy code The code is as follows:

$array = array (
[0] => array ( [sale_unit_detail_id] => 13 [price] => 740000 [geometric_lat] => 51.50348620 [geometric_lng] =>-0.01710900 )
[1] => Array ( [sale_unit_detail_id] => 27 [price] => 740000 [geometric_lat] => 51.50348620 [geometric_lng] => -0.01710900 )
);

The above php array After json_encode, the php array is usually converted into a format like [[...][...]], but today I encountered a strange problem. When the length of my array reached 142, it was converted into a format like
　The format of {'0':{..},'1':{...}......} is very strange, json_encode is a magical function
json_encode in php to convert array Super strange problem when using json string.

Compare the following two pieces of code:

Copy the code The code is as follows:

$menu[ 0][0] = "title1";
$menu[0][1] = "bar1";
$menu[0][2] = "bar2";
$menu[1] [0] = 'title2';
$menu[2][0] = 'title3';
echo '&$menu='.json_encode($menu).'&';

This will output: &$menu=[["title1","bar1","bar2"],["title2"],["title3"]]&

Copy code The code is as follows:

$menu[0]["title"] = "title1";
$menu[0]["bar1"] = "bar1";
$menu[0]["bar2"] = "bar2";
$menu[1][0] = 'title2';
$menu[2][0] = 'title3';
echo '&$menu='.json_encode($menu).'&';

And this actually outputs: &$menu=[{"title": "title1","bar1":"bar1","bar2":"bar2"},["title2"],["title3"]]&

What does it mean? The problem lies in {} and []. {} is an object and [] is an array! ! ! ! The method is different when traversing in non-php situations! json_encode is so amazing, it makes people a little depressed!

http://www.bkjia.com/PHPjc/324404.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/324404.htmlTechArticlejson_encode only supports utf-8 format. I won’t go into details about this. Copy the code. The code is as follows: $array = array ( [ 0] = array ( [sale_unit_detail_id] = 13 [price] = 740000 [geometric_lat] = 51.5034...