PHP format and output json data example

Php directly outputs json format

Php directly outputs the json format. Many new users have a misunderstanding that echo json_encode ($ data) is used to output json data. If yes, the output text is in json format rather than json data, the correct statement should be followed by one sentence:

The code is as follows:	Copy code
<? Php   Header ('content-type: text/json'); // indicates the object receiving data. json data is output on this page; $ Json = {"name": "yovae", "password": "12345"}; // Although this line of data is in json format, if there is no such sentence, it will not be processed as json data; Echo $ json; ?>

Example

JSON data formatting function

Format JSON data in string form into indent form. Generally, the JSON string converted using json_encode is not indented. This method is much better.
Here, tab indentation is used by default. To change it to a space, replace the variable $ indentStr.

The code is as follows:

Copy code

/** * Indents a flat JSON string to make it more human-readable. * @ Param string $ json The original JSON string to process. * @ Return string Indented version of the original JSON string. */ Function indent ($ json ){ $ Result = ''; $ Pos = 0; $ StrLen = strlen ($ json ); $ IndentStr = ''; $ NewLine = "\ n "; $ PrevChar = ''; $ OutOfQuotes = true; For ($ I = 0; $ I <= $ strLen; $ I ++ ){ // Grab the next character in the string. $ Char = substr ($ json, $ I, 1 ); // Are we inside a quoted string? If ($ char = '"' & $ prevChar! = '\\'){ $ OutOfQuotes =! $ OutOfQuotes; // If this character is the end of an element, // Output a new line and indent the next line. } Else if ($ char = '}' | $ char = ']') & $ outOfQuotes ){ $ Result. = $ newLine; $ Pos --; For ($ j = 0; $ j <$ pos; $ j ++ ){ $ Result. = $ indentStr; } } // Add the character to the result string. $ Result. = $ char; // If the last character was the beginning of an element, // Output a new line and indent the next line. If ($ char = ',' | $ char = '{' | $ char = '[') & $ outOfQuotes ){ $ Result. = $ newLine; If ($ char = '{' | $ char = '['){ $ Pos ++; } For ($ j = 0; $ j <$ pos; $ j ++ ){ $ Result. = $ indentStr; } } $ PrevChar = $ char; } Return $ result; }

Well, the json database output in this way is very beautiful and formatted. Here I will not give an example. Please refer to it without your defense.