fix: resolve PHP 8.4/8.5 deprecations in HttpAsset and BasePhpFormulaLoader#47
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LukeTowers merged 2 commits intoJun 4, 2026
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A full PHPUnit run under PHP 8.4 and 8.5 (error_reporting=-1) surfaced two
deprecations originating in the library's own src/:
- HttpAsset::getLastModified() — the predefined locally scoped
$http_response_header variable is deprecated in PHP 8.5. The existing
function_exists('http_get_last_response_headers') shim does not suppress it:
the notice is emitted at compile time from the bare variable read (verified
via `php -l`, which executes nothing yet still emits it), so a runtime guard
can never silence it. Reading it through the null-coalescing operator
(`$http_response_header ?? []`) compiles to a non-deprecated fetch, keeping
the pre-8.4 fallback working while emitting nothing on 8.5. `?? []` (not null)
keeps the subsequent foreach safe. composer still pins php ^7.3 || ^8.0, so
the legacy branch cannot be removed outright yet.
- BasePhpFormulaLoader::processCall() — shell_exec() returns string|false|null,
and passing null to unserialize()'s non-nullable string parameter is
deprecated in PHP 8.4+. Guard with is_string(); the array() fallback is
behaviour-identical to the previous unserialize(false) === false path.
Also add the missing `use Assetic\Contracts\Filter\FilterInterface;` to
CssImportFilter so the constructor's ?FilterInterface type hint resolves to the
real interface instead of a non-existent Assetic\Filter\FilterInterface (a
latent Error on any PHP version when a non-null filter is passed).
Verified: zero project-src deprecations on PHP 8.4.14 and 8.5.5; the test suite
remains green (HttpAsset, FormulaLoader and CssImportFilter tests all pass).
jaxwilko
reviewed
Jun 4, 2026
Co-authored-by: Jack Wilkinson <31214002+jaxwilko@users.noreply.github.com>
LukeTowers
approved these changes
Jun 4, 2026
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Summary
A full PHPUnit run under PHP 8.4.14 and PHP 8.5.5 with
error_reporting=-1surfaced two deprecations originating in the library's ownsrc/(everything else came fromtwig/scssphpinvendor/). This PR fixes both, plus one latent type-hint bug found along the way.1.
HttpAsset::getLastModified()—$http_response_headerdeprecated (PHP 8.5)The predefined locally scoped
$http_response_headervariable is deprecated in 8.5. The existingfunction_exists('http_get_last_response_headers')shim does not suppress it: the notice is emitted at compile time from the bare variable read — verified withphp -l, which executes nothing yet still emits it — so a runtime guard can never silence it.Reading it through the null-coalescing operator (
$http_response_header ?? []) compiles to a non-deprecated fetch, so the pre-8.4 fallback keeps working while 8.5 emits nothing.?? [](not?? null) keeps the subsequentforeachsafe.composer.jsonstill pinsphp: ^7.3 || ^8.0, so the legacy branch can't be dropped outright yet — the comment notes when it can.2.
BasePhpFormulaLoader::processCall()—nulltounserialize()(PHP 8.4 & 8.5)shell_exec()returnsstring|false|null; passingnulltounserialize()'s non-nullablestringparameter is deprecated in 8.4+. Guarded withis_string(). Thearray()fallback is behaviour-identical to the previousunserialize(false) === falsepath (the downstreamisset($args[0..2])checks readfalseon an empty array).3.
CssImportFilter— missinguse(latent, any PHP version)The constructor's
?FilterInterfacehint resolved to a non-existentAssetic\Filter\FilterInterfaceinstead of the realAssetic\Contracts\Filter\FilterInterface(no matching import) — a latentErrorwhenever a non-null filter is passed. Added the missinguse.