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Title: PHP: NULL - Manual

X Title: PHP: NULL - Manual

Open Graph Description: NULL

X Description: NULL

X: @official_php

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Domain: php.net

DescriptionNULL
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twitter:creator@official_php
twitter:image:srchttps://www.php.net/images/meta-image.png
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update page nowhttps://php.net/x-myracloud-5958a2bbbed300a9b9ac631223924e0b/1768205622.066
https://php.net/
Downloads https://php.net/downloads.php
Documentation https://php.net/docs.php
Get Involved https://php.net/get-involved.php
Help https://php.net/support.php
https://php.net/releases/8.5/index.php
https://php.net/lookup-form.php
https://php.net/menu.php
Getting Startedhttps://php.net/manual/en/getting-started.php
Introductionhttps://php.net/manual/en/introduction.php
A simple tutorialhttps://php.net/manual/en/tutorial.php
Language Referencehttps://php.net/manual/en/langref.php
Basic syntaxhttps://php.net/manual/en/language.basic-syntax.php
Typeshttps://php.net/manual/en/language.types.php
Variableshttps://php.net/manual/en/language.variables.php
Constantshttps://php.net/manual/en/language.constants.php
Expressionshttps://php.net/manual/en/language.expressions.php
Operatorshttps://php.net/manual/en/language.operators.php
Control Structureshttps://php.net/manual/en/language.control-structures.php
Functionshttps://php.net/manual/en/language.functions.php
Classes and Objectshttps://php.net/manual/en/language.oop5.php
Namespaceshttps://php.net/manual/en/language.namespaces.php
Enumerationshttps://php.net/manual/en/language.enumerations.php
Errorshttps://php.net/manual/en/language.errors.php
Exceptionshttps://php.net/manual/en/language.exceptions.php
Fibershttps://php.net/manual/en/language.fibers.php
Generatorshttps://php.net/manual/en/language.generators.php
Attributeshttps://php.net/manual/en/language.attributes.php
References Explainedhttps://php.net/manual/en/language.references.php
Predefined Variableshttps://php.net/manual/en/reserved.variables.php
Predefined Exceptionshttps://php.net/manual/en/reserved.exceptions.php
Predefined Interfaces and Classeshttps://php.net/manual/en/reserved.interfaces.php
Predefined Attributeshttps://php.net/manual/en/reserved.attributes.php
Context options and parametershttps://php.net/manual/en/context.php
Supported Protocols and Wrappershttps://php.net/manual/en/wrappers.php
Securityhttps://php.net/manual/en/security.php
Introductionhttps://php.net/manual/en/security.intro.php
General considerationshttps://php.net/manual/en/security.general.php
Installed as CGI binaryhttps://php.net/manual/en/security.cgi-bin.php
Installed as an Apache modulehttps://php.net/manual/en/security.apache.php
Session Securityhttps://php.net/manual/en/security.sessions.php
Filesystem Securityhttps://php.net/manual/en/security.filesystem.php
Database Securityhttps://php.net/manual/en/security.database.php
Error Reportinghttps://php.net/manual/en/security.errors.php
User Submitted Datahttps://php.net/manual/en/security.variables.php
Hiding PHPhttps://php.net/manual/en/security.hiding.php
Keeping Currenthttps://php.net/manual/en/security.current.php
Featureshttps://php.net/manual/en/features.php
HTTP authentication with PHPhttps://php.net/manual/en/features.http-auth.php
Cookieshttps://php.net/manual/en/features.cookies.php
Sessionshttps://php.net/manual/en/features.sessions.php
Handling file uploadshttps://php.net/manual/en/features.file-upload.php
Using remote fileshttps://php.net/manual/en/features.remote-files.php
Connection handlinghttps://php.net/manual/en/features.connection-handling.php
Persistent Database Connectionshttps://php.net/manual/en/features.persistent-connections.php
Command line usagehttps://php.net/manual/en/features.commandline.php
Garbage Collectionhttps://php.net/manual/en/features.gc.php
DTrace Dynamic Tracinghttps://php.net/manual/en/features.dtrace.php
Function Referencehttps://php.net/manual/en/funcref.php
Affecting PHP's Behaviourhttps://php.net/manual/en/refs.basic.php.php
Audio Formats Manipulationhttps://php.net/manual/en/refs.utilspec.audio.php
Authentication Serviceshttps://php.net/manual/en/refs.remote.auth.php
Command Line Specific Extensionshttps://php.net/manual/en/refs.utilspec.cmdline.php
Compression and Archive Extensionshttps://php.net/manual/en/refs.compression.php
Cryptography Extensionshttps://php.net/manual/en/refs.crypto.php
Database Extensionshttps://php.net/manual/en/refs.database.php
Date and Time Related Extensionshttps://php.net/manual/en/refs.calendar.php
File System Related Extensionshttps://php.net/manual/en/refs.fileprocess.file.php
Human Language and Character Encoding Supporthttps://php.net/manual/en/refs.international.php
Image Processing and Generationhttps://php.net/manual/en/refs.utilspec.image.php
Mail Related Extensionshttps://php.net/manual/en/refs.remote.mail.php
Mathematical Extensionshttps://php.net/manual/en/refs.math.php
Non-Text MIME Outputhttps://php.net/manual/en/refs.utilspec.nontext.php
Process Control Extensionshttps://php.net/manual/en/refs.fileprocess.process.php
Other Basic Extensionshttps://php.net/manual/en/refs.basic.other.php
Other Serviceshttps://php.net/manual/en/refs.remote.other.php
Search Engine Extensionshttps://php.net/manual/en/refs.search.php
Server Specific Extensionshttps://php.net/manual/en/refs.utilspec.server.php
Session Extensionshttps://php.net/manual/en/refs.basic.session.php
Text Processinghttps://php.net/manual/en/refs.basic.text.php
Variable and Type Related Extensionshttps://php.net/manual/en/refs.basic.vartype.php
Web Serviceshttps://php.net/manual/en/refs.webservice.php
Windows Only Extensionshttps://php.net/manual/en/refs.utilspec.windows.php
XML Manipulationhttps://php.net/manual/en/refs.xml.php
GUI Extensionshttps://php.net/manual/en/refs.ui.php
Booleans » https://php.net/language.types.boolean.php
« Type System https://php.net/language.types.type-system.php
PHP Manualhttps://php.net/index.php
Language Referencehttps://php.net/langref.php
Typeshttps://php.net/language.types.php
nullhttps://php.net/language.types.null.php
nullhttps://php.net/reserved.constants.php#constant.null
unset()https://php.net/function.unset.php
nullhttps://php.net/reserved.constants.php#constant.null
nullhttps://php.net/language.types.null.php
nullhttps://php.net/reserved.constants.php#constant.null
nullhttps://php.net/reserved.constants.php#constant.null
nullhttps://php.net/language.types.null.php
nullhttps://php.net/reserved.constants.php#constant.null
is_null()https://php.net/function.is-null.php
unset()https://php.net/function.unset.php
Learn How To Improve This Pagehttps://github.com/php/doc-base/blob/master/README.md
Submit a Pull Requesthttps://github.com/php/doc-en/blob/master/language/types/null.xml
Report a Bughttps://github.com/php/doc-en/issues/new?body=From%20manual%20page:%20https:%2F%2Fphp.net%2Flanguage.types.null%0A%0A---
＋add a notehttps://php.net/manual/add-note.php?sect=language.types.null&repo=en&redirect=https://www.php.net/manual/en/language.types.null.php
uphttps://php.net/manual/vote-note.php?id=103620&page=language.types.null&vote=up
downhttps://php.net/manual/vote-note.php?id=103620&page=language.types.null&vote=down
quickpickhttps://php.net/language.types.null.php#103620
https://php.net/language.types.null.php#103620
uphttps://php.net/manual/vote-note.php?id=121995&page=language.types.null&vote=up
downhttps://php.net/manual/vote-note.php?id=121995&page=language.types.null&vote=down
Hayley Watsonhttps://php.net/language.types.null.php#121995
https://php.net/language.types.null.php#121995
＋add a notehttps://php.net/manual/add-note.php?sect=language.types.null&repo=en&redirect=https://www.php.net/manual/en/language.types.null.php
Typeshttps://php.net/language.types.php
Introductionhttps://php.net/language.types.intro.php
Type Systemhttps://php.net/language.types.type-system.php
NULLhttps://php.net/language.types.null.php
Booleanshttps://php.net/language.types.boolean.php
Integershttps://php.net/language.types.integer.php
Floating point numbershttps://php.net/language.types.float.php
Stringshttps://php.net/language.types.string.php
Numeric stringshttps://php.net/language.types.numeric-strings.php
Arrayshttps://php.net/language.types.array.php
Objectshttps://php.net/language.types.object.php
Enumerationshttps://php.net/language.types.enumerations.php
Resourceshttps://php.net/language.types.resource.php
Callableshttps://php.net/language.types.callable.php
Mixedhttps://php.net/language.types.mixed.php
Voidhttps://php.net/language.types.void.php
Neverhttps://php.net/language.types.never.php
Relative class typeshttps://php.net/language.types.relative-class-types.php
Singleton typeshttps://php.net/language.types.singleton.php
Iterableshttps://php.net/language.types.iterable.php
Type declarationshttps://php.net/language.types.declarations.php
Type Jugglinghttps://php.net/language.types.type-juggling.php
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Contacthttps://php.net/contact.php
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Privacy policyhttps://php.net/privacy.php
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