Convert PHP to Python (incomplete time-saver)

gistfile1.txt

#Instructions:
# 1. Launch ipython
# 2. manually set filename = '/path/to/file.php'
# 3. Copy/Paste the below code to write transformed content to ./output.txt

import re

with open(filename,'r') as f: code = f.read()

code = code.replace('<?php','').replace('<?','')
code = code.replace('array()','[]')
code = code.replace('function ','def ')
code = code.replace('var ','self.')
code = code.replace('$this','self')
code = code.replace('self::','') #Assume static calls are now moved to the module level
code = code.replace('static ','') #Assume static calls are now moved to the module level
code = code.replace('public ','')
code = code.replace('//','#')
code = code.replace(';\n','\n').replace(';#','#')
code = code.replace('$','')
code = code.replace('.=','+=').replace(' . ',' + ') #concatenation
code = code.replace('&&','and')
code = code.replace('||','or')
code = re.sub("in_array\((.*),(.*)\)","\\1 in \\2",code)
code = code.replace('array(','[')
code = re.sub("[ ]+=>[ ]+",": ",code)
code = re.sub("if\((.*)\){","if \\1:",code)
code = code.replace('if  ','if ')
code = code.replace('){','):').replace('{\n',':\n')
code = code.replace('}else if','elif').replace('else if','elif').replace('}elif:','elif:')
code = code.replace('}else{','else:').replace('else{','else:').replace('}else:','else:')
code = code.replace('echo','print')
code = re.sub("([A-Z])","_\\1",code).lower() #Convert camelcase to underscore. Run before converting True/False/None etc
code = re.sub("if empty\((.*)\)+","if \\1 is None",code)
code = re.sub("if \!isset\((.*)\)+","if \\1 is None",code)
code = re.sub("if \is_null\((.*)\)+","if \\1 is None",code)
code = code.replace('NULL','None')
code = code.replace('null','None')
code = code.replace('false','False')
code = code.replace('true','True')
code = code.replace('++','+=1')
code = code.replace('strlen','len')
code = code.replace('count','len')
code = code.replace('\t','    ')
code = code.replace('->','.')
code = code.replace('}','') #somewhat dangerous
code = code.replace('floatval(','float(')
code = code.replace('intval(','int(')

#Untested additions...
code = code.replace('===None',' is None')
code = code.replace('!==None',' is not None')
code = code.replace('!==None',' is not None')
code = code.replace('array_sum','sum')
code = re.sub("str_repeat\((.*),(.*)\)"," \\1 * \\2 ",code)
code = re.sub("implode\((.*),(.*)\)"," \\1.join(\\2) ",code)
code = re.sub("explode\((.*),(.*)\)"," \\2.split(\\1) ",code)
code = re.sub("foreach\((.*) as (.*)=>(.*)\)","for \\2,\\3 in enumerate(\\1)",code)
code = re.sub("foreach\((.*) as (.*)\)","for \\2 in \\1",code)
code = re.sub("\[\]= (.*)",".append(\\1)",code) #appending new element to array
code = re.sub("str_replace\((.*),(.*),(.*)\)","\\3.replace(\\1,\\2)",code)

#comments
code = re.sub("/\*+","\"\"\"",code)
code = re.sub(" \*+/","\"\"\"",code)
code = re.sub("\*+/","\"\"\"",code)
code = re.sub("  \* ","\"\"\"",code)
code = re.sub("\t \* ","\"\"\"",code)

 
with open('output.txt','w') as f: f.write(code)