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PHP session lost after redirect

... First, carry out these usual checks: Make sure session_start(); is called before any sessions are being called. So a safe bet would be to put it at the beginning of your page, immediately after the opening <?php declaration before anything else. Also ensure there are no whitespaces/tabs be...
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How do I assert equality on two classes without an equals method?

... I generally implement this usecase using org.apache.commons.lang3.builder.EqualsBuilder Assert.assertTrue(EqualsBuilder.reflectionEquals(expected,actual)); ...
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MySQL: determine which database is selected?

After calling mysql_select_db to grab a database, is there any way to later output the name of the database that is currently selected? This seems very basic but I couldn't find anything on php.net or stackoverflow (all results are for "no database selected"). ...
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How can I clone an SQL Server database on the same server in SQL Server 2008 Express?

... Install Microsoft SQL Management Studio, which you can download for free from Microsoft's website: Version 2008 Microsoft SQL Management Studio 2008 is part of SQL Server 2008 Express with Advanced Services Version 2012...
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Creating a ZIP Archive in Memory Using System.IO.Compression

...her version of zipping without writing any file. string fileName = "export_" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".xlsx"; byte[] fileBytes = here is your file in bytes byte[] compressedBytes; string fileNameZip = "Export_" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".zip"; using (var outS...
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How to print color in console using System.out.println?

...rts it, you can use ANSI escape codes to use color in your output. It generally works for Unix shell prompts; however, it doesn't work for Windows Command Prompt (Although, it does work for Cygwin). For example, you could define constants like these for the colors: public static final String ANSI_R...
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How to put individual tags for a scatter plot

... That's what I was going to say. Link to docs: matplotlib.sourceforge.net/api/… Link to demo: matplotlib.sourceforge.net/examples/pylab_examples/… – Paul Feb 28 '11 at 21:06 ...
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How to send email to multiple recipients using python smtplib?

... This really works, I spent a lot of time trying multiple variants. import smtplib from email.mime.text import MIMEText s = smtplib.SMTP('smtp.uk.xensource.com') s.set_debuglevel(1) msg = MIMEText("""body""") sender = 'me@example.c...
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What's the point of 'const' in the Haskell Prelude?

... It's useful for passing to higher-order functions when you don't need all their flexibility. For example, the monadic sequence operator >> can be defined in terms of the monadic bind operator as x >> y = x >>= const y It's somewhat neater than using a lambda x >> y =...
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Similarity String Comparison in Java

...t is part of commons-text: commons.apache.org/proper/commons-text/javadocs/api-release/org/… – Luiz Nov 13 '19 at 13:41 add a comment  |  ...