benchlooki.blogg.se - Alternative to isset php

#Alternative to isset php archive#
#Alternative to isset php portable#

Without raising any errors, warnings or notices. Isset($abc) & isset($abc->def) & isset($abc->def->ghi) You can safely use isset to check properties and subproperties of objects directly.

#Alternative to isset php archive#

Write it in a way that works either for both or decently for both.Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Errors Exceptions 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

#Alternative to isset php portable#

This way if you want your code to be decently portable between languages, if that's a concern.

Which is also usable in PHP in the same way. For all other cases adapt your code accordingly. Though be pleasantly surprised is they are. So you should never expect the same behavior in any of them. Not all languages do things the same way. To learn more about ternary operators and usage, visit PHP.net Comparison Operators. $message = 'Hello '.($user->get('first_name') ?: 'Guest') /* echo, inline */Įcho 'Based on your score, you are a ',($score > 10 ? 'genius' : 'nobody') //harsh! /* a bit tougher */Įcho 'Taking into account your age and score, you are: ',($age > 10 ? ($score < 80 ? 'behind' : 'above average') : ($score < 50 ? 'behind' : 'above average')) // returns 'You are behind' /* "thankfully-you-don't-need-to-maintain-this" level */ $message = 'Hello '.($user->is_logged_in() ? $user->get('first_name') : 'Guest') /* shorthand usage */ Here are a couple more uses of ternary operators, ranging from simple to advanced: /* another basic usage */

Use enough parenthesis to keep your code organized, but not so many that you create "code soup.".

If you aren't experienced with using ternary operators, write your code using if/else first, then translate the code into ?'s and :'s.

PHP's behaviour when using more than one ternary operator within a single statement is non-obvious." "Is is recommended that you avoid "stacking" ternary expressions.

PHP.net recommends avoiding stacking ternary operators.

If you work in a team setting, make sure the other programmers understand the code.

Don't go more levels deep than what you feel comfortable with maintaining.

Here are a few tips for when using "?:" logic:

You can do your if/else logic inline with output instead of breaking your output building for if/else statements.

Makes coding simple if/else logic quicker.

There are some valuable advantages to using this type of logic:

$var_is_greater_than_two = ($var > 2 ? true : false) // returns true What Are The Advantages of Ternary Logic? Ternary operator logic is the process of using "(condition) ? (true return value) : (false return value)" statements to shorten your if/else structures. If/Else statements aren't optimal (or necessary) in all situations. I preach a lot about using shorthand CSS and using MooTools to make JavaScript relatively shorthand, so I look towards PHP to do the same. If / Else statements are great but they can be too long.

If / Else statements are easy to code and global to all languages. An essential part of programming is evaluating conditions using if/else and switch/case statements.