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Language: pipe operator |> — parse/lower missing below PHP_COMPILER_PROFILE=8.4 (zend_language_parser.y) #18007
Description
Category
Language · PHP 8.4 forward profile
Problem
PHP 8.4 adds the pipe operator |> for functional chaining. Zend 8.2 (reference Docker image) rejects the syntax; Zend 8.4 accepts and evaluates it. This compiler already lowers pipe on PHP_COMPILER_PROFILE=8.4, but the default/8.2 profile should either reject with the Zend parse error or document the gated behavior — workers need a tracked item for full php-src 8.4 parity including JIT/AOT.
| Repro | Zend 8.2 | VM profile=8.4 (2026-07-11) |
|---|---|---|
'hello' |> strtoupper(...) |> strlen(...) |
Parse error | 5 |
php-src reference
- php/php-src
Zend/zend_language_parser.y— pipe expression grammar - php/php-src
Zend/zend_compile.c— pipe lowering
PHP implementation target
lib/Compiler.php— pipe parse + AST lowering behindPHP_COMPILER_PROFILE=8.4lib/JIT/— pipe chain emission when JIT compiles 8.4 units- No new
runtime/*.cbranches
Repro
./script/docker-exec.sh -- bash -lc 'php test/repro/pipe_operator.php 2>&1 | head -1'
# Zend 8.2: Parse error
./script/docker-exec.sh -- bash -lc 'PHP_COMPILER_PROFILE=8.4 php bin/vm.php test/repro/pipe_operator.php'
# expect 5; verify JIT/AOT sameDone when
-
PHP_COMPILER_PROFILE=8.4: VM/JIT/AOT output matches Zend 8.4 for pipe chains (including...placeholder) - Default/8.2 profile: parse error text matches Zend when pipe syntax is used
- Compliance guard under
test/compliance/cases/language/gated to 8.4 - php-src-strict on 8.4 reference; profile gate documented
Activity
PurHur commentedon Jul 11, 2026
claim: cursor-agent — starting this run
Language: reject pipe operator on reference profile with Zend parse e…
PurHur commentedon Jul 11, 2026
Merged via #18022.
Fix:
PipeOperatorSyntaxRejectorrejects|>on the 8.4.0-dev reference profile with Zend-shapedsyntax error, unexpected token ">"before desugar. VM/JIT/AOT pipe chains remain gated behindPHP_COMPILER_PROFILE=8.4; compliance providers skip forward-only pipe.phptcases on reference profile.Verification (Docker):
php bin/vm.php -r '$x = 5 |> fn ($v) => $v * 2;'→Fatal error: syntax error, unexpected token ">" ...PHP_COMPILER_PROFILE=8.4 php bin/vm.php test/repro/pipe_operator.php→5PHP_COMPILER_PROFILE=8.4 vendor/bin/phpunit test/aot/AotTest.php --filter pipe_operator→ OKmake bootstrap-selfhost-vm-driver-execute-probe→ OK