How to convert string to json data in php

php method to convert string to json data: first use the explode() function to convert the string into array format; then use the json_encode() function to convert the array into json data, the syntax format is "json_encode (array,true)".

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

php converts strings to json Data

<?php
$str = &#39;hello world&#39;;
//将字符串转换为数组
$arr = explode(&#39; &#39;,$str,0);
print_r($arr);
print "<br>";

//将数组转换为json
$json=json_encode($arr,true);
print_r($json);

?>

Output:

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Related function description:

1. explode() function

explode() function uses one string to split another string and returns an array composed of strings . Syntax:

explode(separator,string,limit)

Return value: Returns a string array.​

2. json_encode() function

json_encode() is used to JSON encode variables. If the function is successfully executed, it returns JSON data, otherwise it returns FALSE. Syntax:

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 composed 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

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