php错误：Warning: mkdir(): No such file or directory

Warning: mkdir(): No such file or directory
if(!is_dir(‘customimages/album/’.KaTeX parse error: Expected '}', got 'EOF' at end of input: …images/album/'.user_teacher);
//路径要一层一层来建立，否则会报错Warning: mkdir(): No such file or directory 路径若不存在则创建
}