Category Archives: Programming

PayPal v Google Checkout Integration

A comparison of PayPal and Google Checkout API implementation documentation: Paypal: Your third-party SOAP client generates business-object interfaces and network stubs from PayPal-provided WSDL and XSD files that specify the PayPal SOAP message structure, its contents, and the PayPal API … Continue reading

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HTML Logical Tags

A look at the difference between <b> and <strong>. Continue reading

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Accessibility and Dynamic Variable names

First a couple of PHP tips: You don’t have to use curly braces (for example in an “if” statement) if they only contain one statement. For example: could be written more concisely as: This looks neater and can make things … Continue reading

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Single Quotes vs Double Quotes

Both single quotes and double quotes can be used to contain strings but in PHP there is subtle difference between the two. Continue reading

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PHP File Uploads

So you want to upload a image using PHP and an HTML form? Here’s how. Continue reading

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Regex Cheatsheet

Regular Expressions (or regex) are, loosely speaking, a way to find patterns in text. Here’s my incomplete, not particularly useful cheatsheet. metacharacters (special characters that mean something): .^$*+?{[]\|() Metacharacter meanings: . = Any character except newline ^a = Anything but … Continue reading

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Semantic Networks

“What’s a Semantic Network”, you ask in a tone of pretend interest with a subtext of “sounds boring as hell”. Continue reading

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