var_dump() — internals

var_dump() — internals

Where it lives

• Signature: src/builtins/io/var_dump.rs
• Lowering: src/codegen/lower_inst/builtins/debug.rs:152 (lower_var_dump)
• Function symbol: lower_var_dump()

Lowering notes

• Lowers var_dump(value, ...values) for concrete scalar/resource values and array/hash shells.
• Each operand is dumped independently in source order, matching PHP’s variadic var_dump.

Runtime helpers

No direct __rt_* helpers captured — the lowering is inlined or routes through another builtin.

Signature summary

function var_dump(mixed $value, ...$values): void

What the type checker enforces

• Arity: takes exactly 1 argument.
• Variadic: collects excess arguments into $values.

Eval interpreter (magician)

• Declaration: crates/elephc-magician/src/interpreter/builtins/core/var_dump.rs (eval_builtin!)
• Dispatch hooks: direct, values
• Variadic: collects excess arguments into $values.

Cross-references

• User reference for var_dump()