预定义常量

下列常量由此扩展定义，且仅在此扩展编译入 PHP 或在运行时动态载入时可用。

XSL_CLONE_AUTO (int)
XSL_CLONE_NEVER (int)
XSL_CLONE_ALWAYS (int)
LIBXSLT_VERSION (int): libxslt version like 10117.
LIBXSLT_DOTTED_VERSION (string): libxslt version like 1.1.17.
LIBEXSLT_VERSION (int): libexslt version like 813.
LIBEXSLT_DOTTED_VERSION (string): libexslt version like 1.1.17.
XSL_SECPREF_NONE (int): Deactivate all security restrictions.
XSL_SECPREF_READ_FILE (int): Disallows reading files.
XSL_SECPREF_WRITE_FILE (int): Disallows writing files.
XSL_SECPREF_CREATE_DIRECTORY (int): Disallows creating directories.
XSL_SECPREF_READ_NETWORK (int): Disallows reading network files.
XSL_SECPREF_WRITE_NETWORK (int): Disallows writing network files.
XSL_SECPREF_DEFAULT (int): Disallows all write access, i.e. a bitmask of XSL_SECPREF_WRITE_NETWORK | XSL_SECPREF_CREATE_DIRECTORY | XSL_SECPREF_WRITE_FILE.