PHP: json_encode() Convert Array Into The Json Format

PHP: json_encode() Convert Array Into The Json Format: json_encode() convert any values into the json format, supported PHP version PHP 5 >= 5.2.0, PHP 7, PHP 8, PECL and json >= 1.2.0.

 

Parameters

Value: The value being encoded Can be any type except a resource, But All string data must be encoded in UTF-8.

 

Flag: Bitmask consisting of JSON_FORCE_OBJECT, JSON_HEX_QUOT, JSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_INVALID_UTF8_IGNORE, JSON_INVALID_UTF8_SUBSTITUTE, JSON_NUMERIC_CHECK, JSON_PARTIAL_OUTPUT_ON_ERROR, JSON_PRESERVE_ZERO_FRACTION, JSON_PRETTY_PRINT, JSON_UNESCAPED_LINE_TERMINATORS, JSON_UNESCAPED_SLASHES, JSON_UNESCAPED_UNICODE, JSON_THROW_ON_ERROR. if you want to learn more about the json_encode flag, please learn from here.

 

Depth: Set the maximum depth must be greater than zero(0).

 

Return Value: Return a json_encoded format string on success or false on failure.

 

json_encode() Code Example:

here we have made some code example based on php json_encode() function and Array,  in these examples we have converted some Array into the json format.

 

Example 1:

<?php

// we take some number value to encode into json format.
$simpleArray = array( 1, 2, 3, 4, 5, 6, 7, 8, 9, 10);

echo json_encode( $simpleArray );

// output: [1,2,3,4,5,6,7,8,9,10]

?>

 

Example 2:

<?php

// we take some string value to encode into json format.
$simpleArray = array( 'hello', 'this', 'is', 'the', 'test', 'string' );

echo json_encode( $simpleArray );

// output: ["hello","this","is","the","test","string"]

?>

 

Example 3:

<?php

// this example we will convering array into another way
$simpleArray = [ 'hello', 'this', 'is', 'the', 'test', 'string', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ];

echo json_encode( $simpleArray );

// output: ["hello","this","is","the","test","string",1,2,3,4,5,6,7,8,9,10]

?>

 

Example 4:

<?php

// now we convert the array object to json object.
$simpleArray = array(
	'testNumberObject' => array( 1, 2, 3, 4, 5, 6, 7, 8, 9, 10),
	'testStringObject' => array( 'foo', 'bar', 'loop', 'control', 'function' ),
);

echo json_encode( $simpleArray );

// output: {"testNumberObject":[1,2,3,4,5,6,7,8,9,10],"testStringObject":["foo","bar","loop","control","function"]}

?>

 

Example 5:

<?php

// now we convert the multi array object to json object.
$simpleArray = array(
	'multiArray' => array(
		'multiValue' => array( 1, 2, 3, 'hello', 'codeForest', 'learn', 'Code', 'anotherMultyArray' => array('this', 'is', 'the', 4, 'array')),
	),
);

echo json_encode( $simpleArray );

// output: {"multiArray":{"multiValue":{"0":1,"1":2,"2":3,"3":"hello","4":"codeForest","5":"learn","6":"Code","anotherMultyArray":["this","is","the",4,"array"]}}}

?>

 

Example 6:

<?php

// if you want convert array into the json format for any action pages or ajax call then follow the simple steps.

// first define the array.

$arr = [];

if(isset($_GET['action'])){
	
	if(!empty($_GET['action']) && $_GET['action'] =='1'){
		
		$arr['status'] = 'success';
		$arr['message'] = 'action taken';
		$arr['html'] = '<h1>Action has been taken</h1><a href="#">Visit Home</a>';
		
	}else{
		
		$arr['status'] = 'error';
		$arr['message'] = 'missing required values!';
		
	}
	
}else{
	
	$arr['status'] = 'error';
	$arr['message'] = 'action missing';
	
}

echo json_encode( $arr );

// output on success: {"status":"success","message":"action taken","html":"<h1>Action has been taken<\/h1><a href=\"#\">Visit Home<\/a>"}
// output on error 1: {"status":"error","message":"action missing"}
// output on error 2: {"status":"error","message":"missing required values!"}

?>

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