New in Symfony 6.3: DX Improvements (Part 1)

Add Current Locale to the App Variable

Contributed by Samaël Villette in #49913

In Symfony there's no simple way to get the current locale of the application from Twig templates. You can use the locale switcher introduced in Symfony 6.1 to pass the locale as a template variable.

In Symfony 6.3, we're improving the global app variable to provide direct access to the current application locale:

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{{ app.locale }}

Dump YAML Numeric Keys as Strings

Contributed by Antoine Lamirault in #48127

By default, the Yaml Component dumps digit-only array keys as integers. However, sometimes you are required to use strings as keys (e.g. the OpenApi specification requires that).

In Symfony 6.3, you can use the new Yaml::DUMP_NUMERIC_KEY_AS_STRING flag to dump those numeric keys as strings:

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$dumped = Yaml::dump([200 => 'foo']);
// 200: foo

$dumped = Yaml::dump([200 => 'foo'], flags: Yaml::DUMP_NUMERIC_KEY_AS_STRING);
// '200': foo

Easier Way to Delete All Cache Pools

Contributed by Bob van de Vijver in #49705

In Symfony 6.3 we've added a new --all argument to the command that clears the contents of the cache pools so you can clear them all at once:

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$ php bin/console cache:pool:clear --all

Automatic Deletion of Expired Profiles

Contributed by Antoine Lamirault in #47352

We all love the Symfony profiler for all the debugging information that it gives us while developing applications. But that comes at a price: the profiler information is stored in files that can quickly take a lot of disk space.

In Symfony 6.3 we've introduced a feature to automatically delete profiles after some time. In practice, on each request there's a 10% random chance that Symfony activates the deletion feature. When it's activated, any profile created two days ago or earlier is deleted.

Add Labels to Dump Functions

Contributed by Alexandre Daubois in #48432

The dump functions dump() and dd() are utilities provided by Symfony when you quickly need to debug some issue and don't require to use a full debugger. In Symfony 6.3 we've improved those functions so you can add argument names to them. Those argument names are later displayed as labels next to the dumped contents:

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{# Before: #}
{# It was common to use regular strings to add some context information #}
{{ dump('Original order', $order, 'Processed order', $processedOrder) }}

{# After #}
{# The name of the arguments is displayed as labels next to the dumped contents #}
{{ dump(original: $order, processed: $processedOrder) }}