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Andreas Heigl

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Watch the clockphpday 20242024-05-16
Explains a concrete design and the code pattern that makes time testable: a PSR-20 clock interface with a production SystemClock and a test FrozenClock…
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Watch the clockDutch PHP Conference 20242024-03-12
Argues that exporting time behind a Clock interface (PSR/FIG) and using DateTimeImmutable fixes flaky time tests by replacing calls to time() with injection of…
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Watch the clockForum PHP 20222022-10-13
Proposal narrows to one method now() returning DateTimeImmutable so code stops calling time(), uses injected factory or clock object for predictability and…
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The First ContactDutch PHP Conference 20192019-06-06
Registration forms often fail on details: use one field for full name and support Unicode and very long names (one example hits 988 characters), ask for…
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How to tame a :unicorn_face:Dutch PHP Conference 20182018-06-07
Explains why characters break, how Unicode grows (initial 65,536 code points, later >1,048,576 across 17 planes), and why emojis in 2010 force use of…
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Time is an illusion (lunchtime doubly so)Dutch PHP Conference 20182018-06-07
Time zones are political and change often: the tz database is at version 2018.5 here, PHP shows 143 historic transitions for zones, and the abbreviation CEST…
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