arcGIS shape filename -> array of field names as PHP array

$shapefile=>array(fieldNames)

import arcpy
import json
from arcpy import env

env.workspace = "E:/master_regions_unpacked"
txtFile = open("E:/master_regions/regionArray","w")
txt = [] 
files = arcpy.ListFiles("*.dbf")
for file in files:
  txt.append("'"+str(file).split(".")[0]+"'=>array(")
	rows = arcpy.SearchCursor(file)
	txtinner = []
	for row in rows:
		txtinner.append(json.dumps(row.NAME))
	txt.append((', ').join(txtinner))
	txt.append("),\n")
text= "var $masterRegions => array(\n " +('').join(txt)[:-2] + " \n);"
print text
txtFile.write(text)
txtFile.close()