How to test if a variable is numeric? - Page 2

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by: Randell D. | last post by:

Folks, Ever since reading an interesting article in Linux Format on PHP whereby suggested code writing was made that could enhance performance on a server, I've started testing various bits of code everytime I found more than one method to perform a single task. I timed each method to find which would complete faster. I thought I'd share my most recent results which (I believe) should help those write their programs to be more...

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by: Cyrus D. | last post by:

Hi guys, What's the best way to test for an empty form value ? I am doing it like this now: $test = $_POST; if(strlen($test) < 1) // it is empty ! Maybe I can just go:

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Math::Pari test fail on Compaq OSF1 5.1b

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by: David Casey | last post by:

I'm working on a program for my C++ class and have it all written and working except for one part. I need to compare two numeric variables to determine decimal accuracy between them. For example: pi = 3.14159... mynum = 3.14226... The mynum is accurate to 2 decimal places compared to pi. I could figure this out easy with a char array since I could just take a character one at a time from each array and compare it. However with a...

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by: MLH | last post by:

120 MyString = "How many copies of each letter do you need?" 150 MyVariant = InputBox(MyString, "How Many?", "3") If MyVariant = "2" Then MsgBox "MyVariant equals the string '2'" If MyVariant = 2 Then MsgBox "MyVariant also equals the value 2" 160 If MyVariant = "" Then HowManyCopies = 1 170 If Not IsNumeric(MyVariant) Then HowManyCopies = 1 MsgBox "OK. HowManyCopies has a value of " & CStr(HowManyCopies) 180 For i =...

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I am a MySQL and PHP newbie. I am having trouble getting the $w variable in my code below passed to mysql. When I use the value of $w directly in the Where clause, the correct rows are returned. However, when I try to use the variable in the Where clause, either an error occurs or no rows are returned. Any thoughts greatly appreciated! I am using php-4.4.2 and MySQL-4.1.18-0 on Suse 9.1 Jerry

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by: user | last post by:

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How to test that an array is 'indexed' vs 'associative'

by: Daniel Klein | last post by:

I have a class constructor that accepts an array as the only argument. The catch is that the array MUST be an 'integer-indexed' array, not an 'associative' array, because the index position has meaning. How can I test for this in the constructor without having to traverse the entire array and checking to make sure the keys are numeric and sequential? Daniel Klein Cuyahoga Falls, OH

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Comprehensive Guide to Website Development in Toronto: Expert Insights from BSMN Consultancy

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In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

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