---
layout: doc
title: mappings / mapp
---
# mapp

### NAME

    mapp() - determine whether or not a given variable is a mapping

### SYNOPSIS

    int mapp( mixed arg );

### DESCRIPTION

    Return 1 if 'arg' is a mapping.

### SEE ALSO

    stringp(3),  pointerp(3),  objectp(3),  intp(3),  bufferp(3), floatp(3)
    functionp(3), nullp(3), undefinedp(3), errorp(3)

