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All pages tagged EXPRESSION

Using Regular Expressions with PHP

Regular expressions are a powerful tool for examining and modifying text. They enable you to search for patterns within a string, extracting matches flexibly and precisely. This tutorial gives a brief overview of basic regular expression syntax and then considers the functions that PHP provides for working with regular expressions. More...

Tags: PHP REGULAR EXPRESSION MATCH REPLACE PATTERN SPLIT FILTER PERL Hits: 802408 Comments: 27

JavaScript: Form Validation

Client side form validation usually done with javascript. For the majority of your users, JavaScript form validation will save a lot of time up front. More...

Access: Format Function

In Access, the Format function returns a string containing an expression formatted according to instructions contained in a format expression. More...

Tags: ACCESS FUNCTION FORMAT EXPRESSION Hits: 166509 Comments: 6

Access: IIF Function

In Access, the IIF function returns one of two arguments depending on the evaluation of an expression. More...

Tags: ACCESS FUNCTION IIF EXPRESSION Hits: 79171 Comments: 0

Access: Switch Function

In Access, the Switch function evaluates a list of expressions and returns a Variant value or an expression associated with the first expression in the list that is True. More...

Tags: ACCESS FUNCTION SWITCH LIST VARIANT EXPRESSION Hits: 41788 Comments: 4

Access: IsNumeric Function

In Access, the IsNumeric function returns a value indicating whether or not an expression can be converted to a numeric data type. More...

Tags: ACCESS FUNCTION ISNUMERIC INDICATE VALUE EXPRESSION Hits: 17558 Comments: 0



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