wp-includes/SimplePie/src/HTTP/Parser.php:237$namestring$valuestring private function add_header(string $name, string $value): void { if ($this->psr7Compatible) { // For PHPStan: should be enforced by template parameter but PHPStan is not smart enough. /** @var array<string, non-empty-array<string>> */ $headers = &$this->headers; $headers[$name][] = $value; } else { // For PHPStan: should be enforced by template parameter but PHPStan is not smart enough. /** @var array<string, string>) */ $headers = &$this->headers; $headers[$name] .= ', ' . $value; } }Unchanged from 6.9.7 through 7.1.0.
Signature, return type and hooks compared across 3 parsed releases.
src/wp-includes/SimplePie/src/HTTP/Parser.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.