$s =~ s!\Q$search!$replacement!g;
\Q will quote a string until \E (if \E is ommitted will quote the whole string). You need to quote the string because s/// uses regexp;
You can view more Perl written in PHP here.
Perl str_replace
August 9th, 2009Netbeans + CakePHP – syntax highlighting for .ctp files
August 6th, 2009Tools -> Options -> Miscellaneous -> Files
New File Extension (ctp)
Associate with PHP
Viola! CTP files are now treated as PHP files!
Mysql from an external file
July 26th, 2009From the command-line:
mysql -u username -ppassword database < filename
From within MySQL:
Log into mysql i.e. mysql -u -p [database]
mysql> source [filename]
PHP – Split with delimiter caputre
July 23rd, 2009Split a string on a regular expression and also capture the delimiter. This can be useful if you have regular expressions like /(cat|dog|fish)/.
$arr = preg_split($rx, $content, -1, PREG_SPLIT_DELIM_CAPTURE);
for ($i = 0; $i < count($arr); $i+=2) {
$chunk = $arr[0];
$delim = $arr[1];
}
Python – Getting dot to match newlines as well
July 23rd, 2009re.DOTALL / re.S – means dot will match newlines
re.MULTILINE / re.M – means that ^$ will only match start and end of string. By default they match start and end of each line
match = re.search(r'^(.+lorem ipsum)(.+)(donor kebab.+)$', s, re.DOTALL + re.MULTILINE)
Perl – quick read text files scripts
July 21st, 2009These two Perl utility scripts are used to quickly read a text file into either a string or an array.
sub read_file_into_string {
my $s = '';
open FH, @_[0];
for (<FH>) { $s .= $_; }
close FH;
return $s;
}
sub read_file_into_array {
my @lines = ();
open FH, @_[0];
for (<FH>) {
chomp;
push @lines, $_;
}
close FH;
return @lines;
}
VBA – write to UTF file (with BOM)
July 14th, 2009Dim objStream
Set objStream = CreateObject("ADODB.Stream")
objStream.Open
objStream.Charset = "UTF-8"
objStream.Position = 0
objStream.WriteText sTxt
objStream.SaveToFile sFileName, 2
objStream.Close
Python MySQL utf connection + dictionary recordsets
July 14th, 2009# -*- coding: utf-8 -*-
import MySQLdb, MySQLdb.cursors
db_connection = MySQLdb.connect(user="root", passwd="pass",
db="mydb", cursorclass = MySQLdb.cursors.DictCursor,
use_unicode = True)
db = db_connection.cursor()
# assuming that id=1271 has a val that has utf "µ" in it
sql = """
SELECT *
FROM vals
WHERE id = 1271
""" % ()
db.execute(sql)
r = db.fetchall()[0]
val = r['val']
print val
print type(val)
Python unicode + xml.dom.minidom + write to file
July 14th, 2009# -*- coding: utf-8 -*-
import xml.dom.minidom, codecs
impl = xml.dom.minidom.getDOMImplementation()
dom = impl.createDocument(None, "root", None)
root_el = dom.documentElement
ascii_el = dom.createElement('ascii')
root_el.appendChild(ascii_el)
ascii_el.appendChild(dom.createTextNode('abc'))
utf_el = dom.createElement('utf')
root_el.appendChild(utf_el)
utf_el.appendChild(dom.createTextNode(unicode('µ 6000', 'utf-8')))
# There's a couple of ways of dealing with output:
if True:
# Will write a utf encoded file without BOM
# <?xml version="1.0"?>
# Will print "µ" to the console
# type(xmlstr) == 'unicode' i.e. unicode string
xmlstr = dom.toxml()
f = codecs.open('utf_test.xml', 'w', 'utf-8')
f.write(xmlstr)
f.close()
print xmlstr
print type(xmlstr)
else:
# Will write a utf encoded file without BOM (same as above)
# <?xml version="1.0" encoding="utf-8"?>
# Will print "??" to the console
# type(xmlstr) == 'str' -- i.e. byte string
xmlstr = dom.toxml('utf-8')
f = open('utf_test.xml', 'w')
f.write(xmlstr)
f.close()
print xmlstr
print type(xmlstr)
Python – pretty dictionary access for objects
June 28th, 2009Instead of hash like access i.e. val = hash['key']
You can achieve a prettier val = obj.key :
class Obj:
..def add(self, k, v):
....self.__dict__[k] = v
o = Obj()
o.add(key, val)