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Custom Lasso tag to check existence of a GET/POST parameter in Lasso script

elizas
in Other Internet Technologies

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This is a custom lasso tag which takes the name of HTTP-POST or GET parameter (submitted through form-posting for example) as argument and returns a Boolean value to indicate whether that parameter is found. It returns true if a parameter with that name is found in the set of HTTP POST/GET parameters and false if the parameter is not found.

This Lasso custom tag is like isset() function in PHP.

Any suggestions are welcomed.

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https://fmforums.com/topic/71807-custom-lasso-tag-to-check-existence-of-a-getpost-parameter-in-lasso-script/
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