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| rfc:isset_ternary [2014/09/27 23:36] – Implementation ajf | rfc:isset_ternary [2015/12/24 21:14] – add docs link ajf |
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| ===== Introduction ===== | ===== Introduction ===== |
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| PHP is a web-focussed programming language, so processing user data is a frequent activity. In such processing it is common to check for something's existence, and if it doesn't exist, use a default value. Yet the simplest way to do this, something along the lines of ''<nowiki>isset($_GET['mykey']) ? $_GET['mykey'] : ""</nowiki>'', is unnecessarily cumbersome. The short ternary operator, ''?:'' provides a way to do this much more conveniently: ''<nowiki>$_GET['mykey'] ?: ""</nowiki>''. However, this is not good practise, as if the value does not exist it will raise an ''E_NOTICE''. Because of these issues, some sort of ifsetor() operator or a modification to ''?:'''s behaviour to make this common pattern easier has been a frequent request (See References). | PHP is a web-focussed programming language, so processing user data is a frequent activity. In such processing it is common to check for something's existence, and if it doesn't exist, use a default value. Yet the simplest way to do this, something along the lines of ''<nowiki>isset($_GET['mykey']) ? $_GET['mykey'] : ""</nowiki>'', is unnecessarily cumbersome. The short ternary operator, ''?:'' provides a way to do this much more conveniently: ''<nowiki>$_GET['mykey'] ?: ""</nowiki>''. However, this is not good practice, as if the value does not exist it will raise an ''E_NOTICE''. Because of these issues, some sort of ifsetor() operator or a modification to ''?:'''s behaviour to make this common pattern easier has been a frequent request (See References). |
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| ===== Proposal ===== | ===== Proposal ===== |
| Merged into master (which will be PHP 7): https://github.com/php/php-src/commit/2d069f640e6cccfa3ba8b1e4f375ade20fb33f64 | Merged into master (which will be PHP 7): https://github.com/php/php-src/commit/2d069f640e6cccfa3ba8b1e4f375ade20fb33f64 |
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| Not yet documented. | Documented at: http://php.net/manual/en/language.operators.comparison.php |
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| ===== References ===== | ===== References ===== |