preg_split() — internals

preg_split() — internals

Where it lives

• Signature: src/builtins/system/preg_split.rs
• Lowering: src/codegen/lower_inst/builtins/regex.rs:405 (lower_preg_split)
• Function symbol: lower_preg_split()

Lowering notes

• Lowers preg_split(pattern, subject, limit?, flags?) through the regex split helper.

Runtime helpers

The following runtime helpers are referenced:

• __rt_preg_split

Signature summary

function preg_split(string $pattern, string $subject, int $limit = -1, int $flags = 0): array

What the type checker enforces

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

Eval interpreter (magician)

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

Cross-references

• User reference for preg_split()