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How to convert array to json in php

Guanhui
GuanhuiOriginal
2020-05-07 13:02:402527browse

How to convert array to json in php

How to convert an array into json in php

In php, you can convert an array into json by using the "json_encode()" function

json_encode function introduction

json_encode - JSON encoding of variables

json_encode ( mixed $value [, int $options = 0 [, int $depth = 512 ]] ) : string

Returns a string, including value Representation of the value in JSON form.

The encoding is affected by the options parameter passed in. In addition, the encoding of floating point values ​​depends on serialize_precision.

json_encode parameter

value:

The value to be encoded can be any data type except the resource type.

The encoding of all string data must be UTF-8.

options:

Binary mask consisting of the following constants: JSON_HEX_QUOT, JSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_NUMERIC_CHECK, JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT, JSON_PRESERVE_ZERO_FRACTION, JSON _UNESCAPED_UNICODE, JSON_PARTIAL_OUTPUT_ON_ERROR.

depth:

Set the maximum depth. Must be greater than 0.

json_encode return value

Returns a JSON encoded string on success or FALSE on failure.

json_encode example

<?php
   $arr = array(&#39;a&#39; => 1, &#39;b&#39; => 2, &#39;c&#39; => 3, &#39;d&#39; => 4, &#39;e&#39; => 5);
   echo json_encode($arr);?>

Print result:

{"a":1,"b":2,"c":3,"d":4,"e":5}



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