Tutorials References Exercises Bootcamps Videos Menu
Sign Up Create Website Get Certified Upgrade

PHP Tutorial

PHP HOME PHP Intro PHP Install PHP Syntax PHP Comments PHP Variables PHP Echo / Print PHP Data Types PHP Strings PHP Numbers PHP Math PHP Constants PHP Operators PHP If...Else...Elseif PHP Switch PHP Loops PHP Functions PHP Arrays PHP Superglobals PHP RegEx

PHP Forms

PHP Form Handling PHP Form Validation PHP Form Required PHP Form URL/E-mail PHP Form Complete

PHP Advanced

PHP Date and Time PHP Include PHP File Handling PHP File Open/Read PHP File Create/Write PHP File Upload PHP Cookies PHP Sessions PHP Filters PHP Filters Advanced PHP Callback Functions PHP JSON PHP Exceptions


PHP What is OOP PHP Classes/Objects PHP Constructor PHP Destructor PHP Access Modifiers PHP Inheritance PHP Constants PHP Abstract Classes PHP Interfaces PHP Traits PHP Static Methods PHP Static Properties PHP Namespaces PHP Iterables

MySQL Database

MySQL Database MySQL Connect MySQL Create DB MySQL Create Table MySQL Insert Data MySQL Get Last ID MySQL Insert Multiple MySQL Prepared MySQL Select Data MySQL Where MySQL Order By MySQL Delete Data MySQL Update Data MySQL Limit Data


PHP XML Parsers PHP SimpleXML Parser PHP SimpleXML - Get PHP XML Expat PHP XML DOM



PHP Examples

PHP Examples PHP Compiler PHP Quiz PHP Exercises PHP Certificate

PHP Reference

PHP Overview PHP Array PHP Calendar PHP Date PHP Directory PHP Error PHP Exception PHP Filesystem PHP Filter PHP FTP PHP JSON PHP Keywords PHP Libxml PHP Mail PHP Math PHP Misc PHP MySQLi PHP Network PHP Output Control PHP RegEx PHP SimpleXML PHP Stream PHP String PHP Variable Handling PHP XML Parser PHP Zip PHP Timezones

PHP mysqli poll() Function

❮ PHP MySQLi Reference

Definition and Usage

The poll() / mysqli_poll() function is used to poll connections.


Object oriented style:

$mysqli -> poll(read, error, reject, seconds, microseconds)

Procedural style:

mysqli_poll(read, error, reject, seconds, microseconds)

Parameter Values

Parameter Description
read Required. Specifies a list of connections to check for outstanding results that can be read
error Required. Specifies a list of connections on which an error occurred, like query failure or lost connection
reject Required. Specifies a list of connections rejected because no asynchronous query has been run on for which the function could poll results
seconds Required. Specifies the maximum number of seconds to wait
microseconds Optional. Specifies the maximum number of microseconds to wait. Default is 0

Technical Details

Return Value: The number of ready connections on success. FALSE on failure
PHP Version: 5.3+

❮ PHP MySQLi Reference