Tips and Tricks

A list of user-submitted tips & tricks

searching
native SQL
databases

• Cloning a Record
• Export data to Excel
• Find duplicate records
• Database backup
shopping
browser info

• AJAX and WEBDNA
• reCAPTCHA code
• Setting a 30-minute Cookie
technical

• ImageMagick
• PayPal gateway
• Paypal IPN
• Check the Federal Government's Social Security database
• WebDNA interaction with zip
text manipulation

• Annoying character on writefile
• Do you hate updating the copyright notice at the bottom of all your pages?
• Extracting the first sentence out of a block of text
• Formatting a long list in a table
• How to keep the text variable after a function has finished
• Removing whitespace
• Spaghetti code
miscellaneous

• How to setup CODA to work with WebDNA?
• Calculating Standard Deviation
• How to create a RSS feed
• Using a simple Array of Variables with [interpret]
• Write Once Use Many
files & folders

• File upload example
dates & times

• How old am I?
• How many working days?
• Redefining [date] & [time] to match your time zone
showing & hiding

• Hideif on IP range
passwords

• Handling credit card numbers
• random password-generator code
xml

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WebDNA interaction with zip

I have a project where I'm allowing several people to upload images...

How old am I?

You want to express an age in years given the dob (mm/dd/yyyy) and today's date...

reCAPTCHA code

reCAPTCHA helps prevent automated abuse of your site (such as comment spam or bogus registrations) by using a CAPTCHA to ensure that only humans perform certain actions...

random password-generator code

Generate a random alpha-numeric string...

Handling credit card numbers

Encrypting the credit card numbers does the job quite nicely...

Using a simple Array of Variables with [interpret]

The [interpret] context is very powerful command in the hands of a skilled WebDNA programmer...