php convert array to json format

php method to convert an array to json format: first create a PHP sample file; then pass "$arr = [10,'Tom',true, '2015-10-15'];echo json_encode( $arr);" statement can be converted.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

How does php convert an array into json format? ?

PHP converts an array into a JSON string

10,'ename'=>'Tom','isMarried'=>true, 'birthday'=>'2015-10-15']; //echo $arr; echo json_encode($arr);//编码为JSON字符串 //结论：索引数组会被json_encode转换为JSON数组，关联数组会被json_encode转换为JSON对象 ?>

The results are as follows

[10,"Tom",true,"2015-10-15"] {"eid":10,"ename":"Tom","isMarried":true,"birthday":"2015-10-15"}

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