See the syntax, wildcard characters, escape characters, and examples of LIKE and NOT LIKE with different collations and data types. In Voting system we need to make sure, one person votes only once, to a particular poll. Learn how to use LIKE, NOT LIKE, and STRCMP () to perform simple and complex pattern matching on strings in MySQL. There are no user contributed notes for this page. Build VOTE / LIKE, UNLIKE Feature: PHP & MySQL. Here’s the syntax of the LIKE operator: expression LIKE pattern ESCAPE escapecharacter Code language: SQL (Structured Query Language) (sql) In this syntax, if the expression matches the pattern, the LIKE operator returns 1. If you would like to use a where clause on your joins, you may use the where and orWhere methods provided by the JoinClause instance. ![]() Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Enumerations Errors Exceptions Fibers Generators Attributes References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Predefined Attributes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an Apache module Session Security Filesystem Security Database Security Error Reporting User Submitted Data Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication Services Command Line Specific Extensions Compression and Archive Extensions Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation GUI Extensions Keyboard Shortcuts ? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto search The LIKE operator is a logical operator that tests whether a string contains a specified pattern or not.
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