dictionary — сохранение файла в папку с использованием переполнения стека

Несколько примеров, которые я пробовал

// Worked
fopen($OutputFolderPath."Text.pdf", "w");

// Didn't work
$pdf->Output($OutputFolderPath . $Mother->PatientTableRecord['Forename'] . ' ' . $Mother->PatientTableRecord['Surname']  . '_' . $Mother->PatientTableRecord['NHSID'] . ' ' . date('d_m_Y') . '.pdf','F');  // $OutputFolderPath . $Mother->PatientTableRecord['Forename'] . ' ' . $Mother->PatientTableRecord['Surname']  . ' ' . date('d_m_Y h_i_s', time()) . '.pdf','F'

// Works with no PDF content inside
fopen($OutputFolderPath . $Mother->PatientTableRecord['Forename'] . ' ' . $Mother->PatientTableRecord['Surname']  . '_' . $Mother->PatientTableRecord['NHSID'] . ' ' . date('d_m_Y') . '.pdf','F');  // $OutputFolderPath . $Mother->PatientTableRecord['Forename'] . ' ' . $Mother->PatientTableRecord['Surname']  . ' ' . date('d_m_Y h_i_s', time()) . '.pdf','w');

// Worked
$pdf->Output('C:/ISOSEC/PDFS/' . ReplaceWindowsFileNameSpecialCharacters($Mother->PatientTableRecord['Forename'] . ' ' . $Mother->PatientTableRecord['Surname']  . '_' . $Mother->PatientTableRecord['NHSID'] . ' ' . date('d_m_Y') . '.pdf'),'F');  // $OutputFolderPath . $Mother->PatientTableRecord['Forename'] . ' ' . $Mother->PatientTableRecord['Surname']  . ' ' . date('d_m_Y h_i_s', time()) . '.pdf','F'

Я пытаюсь использовать $OutputFolderPath

Путь ‘$ OutputFolderPath’:

//MIA-Test/htdocs/SharedFolder/MIA - Digital Post Natal Records/

Ошибка:

fopen(file:////MIA-Test/htdocs/SharedFolder/MIA - Digital Post Natal Records/Fiona Appleton_1946546288 09_06_2015.pdf): failed to open stream: No such file or directory