fopen() — internals

fopen() — internals

Where it lives

• Signature: src/builtins/io/fopen.rs
• Lowering: src/codegen/lower_inst/builtins/io.rs:338 (lower_fopen)
• Function symbol: lower_fopen()

Lowering notes

• Lowers fopen(filename, mode) and boxes stream resources or PHP false.

Runtime helpers

The following runtime helpers are referenced:

• __rt_tmpfile

Signature summary

function fopen(string $filename, string $mode, bool $use_include_path = false, mixed $context = null): mixed

What the type checker enforces

• Arity: takes 2–4 arguments (2 optional).

Eval interpreter (magician)

• Declaration: crates/elephc-magician/src/interpreter/builtins/filesystem/fopen.rs (eval_builtin!)
• Dispatch hooks: direct, values

Cross-references

• User reference for fopen()