How to convert data into json format in php

In PHP, you can use the json_encode() function to convert data into json format. This function can JSON encode PHP variables and return JSON format data. The syntax is "json_encode($value[,$options]) ”; if the conversion fails, FALSE will be returned.

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

In php, you can use the json_encode() function Convert data to json format.

The json_encode() function can JSON encode PHP variables and return JSON format data; if the conversion fails, FALSE will be returned.

This function accepts one required parameter and one optional parameter:

json_encode ( $value [, $options = 0 ] )

Parameters

• value: The value to be encoded. This function is only valid for UTF-8 encoded data.

• 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

• # Returns the string type, which contains the representation of 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.

Example 1: Convert array to json format

1,'b'=>2,'c'=>3,'d'=>4,'e'=>5); echo json_encode($arr); var_dump(json_encode($arr)); ?>

Example 2: Convert array to json format Convert PHP object to JSON format data

name = "sachin"; $e->hobbies = "sports"; $e->birthdate = date('m/d/Y h:i:s a', strtotime("8/5/1974 12:20:03")); echo json_encode($e); ?>

Example 3: Usage of options parameter in json_encode() function

',"'bar'",'"baz"','&blong&', "\xc3\xa9"); echo "Normal: ", json_encode($a), "
"; echo "Tags: ", json_encode($a, JSON_HEX_TAG), "
"; echo "Apos: ", json_encode($a, JSON_HEX_APOS), "
"; echo "Quot: ", json_encode($a, JSON_HEX_QUOT), "
"; echo "Amp: ", json_encode($a, JSON_HEX_AMP), "
"; echo "Unicode: ", json_encode($a, JSON_UNESCAPED_UNICODE), "
"; echo "All: ", json_encode($a, JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP | JSON_UNESCAPED_UNICODE), "

"; $b = array(); echo "Empty array output as array: ", json_encode($b), "
"; echo "Empty array output as object: ", json_encode($b, JSON_FORCE_OBJECT), "

"; $c = array(array(1,2,3)); echo "Non-associative array output as array: ", json_encode($c), "
"; echo "Non-associative array output as object: ", json_encode($c, JSON_FORCE_OBJECT), "

"; $d = array('foo' => 'bar', 'baz' => 'long'); echo "Associative array always output as object: ", json_encode($d), "
"; echo "Associative array always output as object: ", json_encode($d, JSON_FORCE_OBJECT), "

"; ?>

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