search
HomeBackend DevelopmentPHP TutorialUse PHP's json_encode() function to convert an array or object into a formatted JSON string

Use PHP's json_encode() function to convert an array or object into a formatted JSON string

Nov 03, 2023 pm 06:18 PM
phpjson_encode()json stringArray/object conversion

Use PHPs json_encode() function to convert an array or object into a formatted JSON string

Use PHP's json_encode() function to convert an array or object into a formatted JSON string

In PHP development, it is often necessary to convert an array or object It is a JSON string for data transmission or storage. PHP provides the json_encode() function, which can easily convert arrays or objects into JSON format strings. This article will introduce how to use the json_encode() function to achieve this function through specific code examples.

First, we define an array and an object to demonstrate the conversion process:

$arr = array(
    'name' => 'John',
    'age' => 25,
    'gender' => 'male'
);

class Person {
    public $name;
    public $age;
    public $gender;

    public function __construct($name, $age, $gender) {
        $this->name = $name;
        $this->age = $age;
        $this->gender = $gender;
    }
}

$obj = new Person('Jane', 30, 'female');

Next, we use the json_encode() function to convert the array and object into a JSON string, using JSON_PRETTY_PRINT Parameters implement formatted output:

$arr_json = json_encode($arr, JSON_PRETTY_PRINT);
$obj_json = json_encode($obj, JSON_PRETTY_PRINT);

In the above code, $arr_json and $obj_json save the JSON format strings of $arr and $obj respectively.

Finally, we can print out these two JSON strings to view the conversion results:

echo $arr_json;
echo "
";
echo $obj_json;

Execute the above code, the following results will be output:

{
    "name": "John",
    "age": 25,
    "gender": "male"
}
{
    "name": "Jane",
    "age": 30,
    "gender": "female"
}

You can see At this point, the json_encode() function successfully converts arrays and objects into formatted JSON strings, and arranges them according to the format of key-value pairs. At the same time, using the JSON_PRETTY_PRINT parameter can achieve a more readable output effect.

In addition to the JSON_PRETTY_PRINT parameter, the json_encode() function also provides many other parameter options, which can be flexibly set according to actual needs. For example, you can use the JSON_UNESCAPED_UNICODE parameter to avoid escaping Chinese characters, and use the JSON_NUMERIC_CHECK parameter to convert numeric strings into numbers, etc.

Summary:

Through the above code examples, we learned how to use PHP's json_encode() function to convert an array or object into a formatted JSON string. Using this function can easily realize data transmission and storage, and can flexibly set parameters to meet needs. In actual development, we can use the json_encode() function according to specific circumstances to quickly convert arrays or objects into JSON.

The above is the detailed content of Use PHP's json_encode() function to convert an array or object into a formatted JSON string. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
PHP Email: Step-by-Step Sending GuidePHP Email: Step-by-Step Sending GuideMay 09, 2025 am 12:14 AM

PHPisusedforsendingemailsduetoitsintegrationwithservermailservicesandexternalSMTPproviders,automatingnotificationsandmarketingcampaigns.1)SetupyourPHPenvironmentwithawebserverandPHP,ensuringthemailfunctionisenabled.2)UseabasicscriptwithPHP'smailfunct

How to Send Email via PHP: Examples & CodeHow to Send Email via PHP: Examples & CodeMay 09, 2025 am 12:13 AM

The best way to send emails is to use the PHPMailer library. 1) Using the mail() function is simple but unreliable, which may cause emails to enter spam or cannot be delivered. 2) PHPMailer provides better control and reliability, and supports HTML mail, attachments and SMTP authentication. 3) Make sure SMTP settings are configured correctly and encryption (such as STARTTLS or SSL/TLS) is used to enhance security. 4) For large amounts of emails, consider using a mail queue system to optimize performance.

Advanced PHP Email: Custom Headers & FeaturesAdvanced PHP Email: Custom Headers & FeaturesMay 09, 2025 am 12:13 AM

CustomheadersandadvancedfeaturesinPHPemailenhancefunctionalityandreliability.1)Customheadersaddmetadatafortrackingandcategorization.2)HTMLemailsallowformattingandinteractivity.3)AttachmentscanbesentusinglibrarieslikePHPMailer.4)SMTPauthenticationimpr

Guide to Sending Emails with PHP & SMTPGuide to Sending Emails with PHP & SMTPMay 09, 2025 am 12:06 AM

Sending mail using PHP and SMTP can be achieved through the PHPMailer library. 1) Install and configure PHPMailer, 2) Set SMTP server details, 3) Define the email content, 4) Send emails and handle errors. Use this method to ensure the reliability and security of emails.

What is the best way to send an email using PHP?What is the best way to send an email using PHP?May 08, 2025 am 12:21 AM

ThebestapproachforsendingemailsinPHPisusingthePHPMailerlibraryduetoitsreliability,featurerichness,andeaseofuse.PHPMailersupportsSMTP,providesdetailederrorhandling,allowssendingHTMLandplaintextemails,supportsattachments,andenhancessecurity.Foroptimalu

Best Practices for Dependency Injection in PHPBest Practices for Dependency Injection in PHPMay 08, 2025 am 12:21 AM

The reason for using Dependency Injection (DI) is that it promotes loose coupling, testability, and maintainability of the code. 1) Use constructor to inject dependencies, 2) Avoid using service locators, 3) Use dependency injection containers to manage dependencies, 4) Improve testability through injecting dependencies, 5) Avoid over-injection dependencies, 6) Consider the impact of DI on performance.

PHP performance tuning tips and tricksPHP performance tuning tips and tricksMay 08, 2025 am 12:20 AM

PHPperformancetuningiscrucialbecauseitenhancesspeedandefficiency,whicharevitalforwebapplications.1)CachingwithAPCureducesdatabaseloadandimprovesresponsetimes.2)Optimizingdatabasequeriesbyselectingnecessarycolumnsandusingindexingspeedsupdataretrieval.

PHP Email Security: Best Practices for Sending EmailsPHP Email Security: Best Practices for Sending EmailsMay 08, 2025 am 12:16 AM

ThebestpracticesforsendingemailssecurelyinPHPinclude:1)UsingsecureconfigurationswithSMTPandSTARTTLSencryption,2)Validatingandsanitizinginputstopreventinjectionattacks,3)EncryptingsensitivedatawithinemailsusingOpenSSL,4)Properlyhandlingemailheaderstoa

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

SublimeText3 Linux new version

SublimeText3 Linux new version

SublimeText3 Linux latest version

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools