Detailed explanation of usage examples of php json related functions

This article mainly introduces php json related functions usage, lists the functions of json_encode, json_decode and json_last_error, and analyzes json_encode and json_decode with examples For specific usage skills of functions, friends in need can refer to

This article describes the usage of php json related functions with examples. Share it with everyone for your reference, the details are as follows:

Function list:

##json_last_errorReturn the last occurrence Error

Function	Description
json_encode	Encode json on variable
json_decode	Decode the string in json format and convert it into a php variable

##For example 1:
json_encode

$arr=array("A"=>"a","B"=>"b","C"=>"c","D"=>"d");
echo json_encode($arr);

output:

{"A":"a","B":"b","C":"c","D":"d"}

For example 2:

json_decode

$arr='{"A":"a","B":"b","C":"c","D":"d"}';
var_dump(json_decode($arr));
var_dump(json_decode($arr,true));

output:

object(stdClass)[1]
 public 'A' => string 'a' (length=1)
 public 'B' => string 'b' (length=1)
 public 'C' => string 'c' (length=1)
 public 'D' => string 'd' (length=1)
array (size=4)
 'A' => string 'a' (length=1)
 'B' => string 'b' (length=1)
 'C' => string 'c' (length=1)
 'D' => string 'd' (length=1)

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