![]() ![]() Php if else code#Note to editors: the behaviour described is specifically linked to the use of an else, but this note could also be added to the more general "Alternative syntax for control structures" page as it's also commenting on mixing syntaxes.If Else and Switch Case are control structures that let you execute code segments based on given conditions. avoid mixing syntaxes inside the blocks (even if it works using this semi-colon trick). avoid mixing alternate syntax and one liners in if/else control structures ![]() Subsequent semi-colons don't matter, and the semi-colon can be anywhere: at the end of the line, on the following line on its own, or just before the else like " else". I can only guess that the added semi-colon makes it work by "closing the if" in a way. "$var=1 " is enough, even a single semi-colon is, but read below).Ī third way is to add a semi-colon to the one-liner, having two if necessary: Or write some more code on a newline between the one-liner and the following else (eg. ![]() If ( true ) Įither use the alternate syntax on the line in error: The alternative is to duplicate the unconditional code throughout the construct.Īlternate syntax is great (dont remove it!), but take care using "else:" after one liners, this wont work: To insert unconditional preprocessing code for $e onward, one need only split the "elseif": There is still a need for "else if", as you may have additional code to be executed unconditionally at some rung of the ladder an "else if" construction allows this unconditional code to be elegantly inserted before or after the entire rest of the process. Nobody normally nests if() blocks to more than a thousand levels unless they're trying to break things, which is a whole different problem.) ![]() (Increasing $limit will also eventually cause a parser stack overflow error, but the level where this happens is ridiculous in real world terms. This test should show that "elseif" executes in roughly two-thirds the time of "else if". C++), it's important to recognise that "else if" is a nested language construct and "elseif" is a linear language construct they may be compared in performance to a recursive loop as opposed to an iterative loop. If you're coming from another language that does not have the "elseif" construct (e.g. Php if else archive#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 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 ![]()
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