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PHP Pass by reference in foreach [duplicate]
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Because on the second loop, $v is still a reference to the last array item, so it's overwritten each time.
You can see it like that:
$a = array ('zero','one','two', 'three');
foreach ($a as &$v) {
}
foreach ($a as $v) {
echo $v.'-'.$a[3].PHP_EOL;
}
As you can see, the last array it...
How to get a variable name as a string in PHP?
...not always work, since different variables often have the same values, but it's the only way I can think of to do this.
Edit: get_defined_vars() doesn't seem to be working correctly, it returns 'var' because $var is used in the function itself. $GLOBALS seems to work so I've changed it to that.
fu...
Cross Browser Flash Detection in Javascript
...apable of displaying embedded flash content. I say reliably because I know its not possible 100% of the time.
16 Answers
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Quick-and-dirty way to ensure only one instance of a shell script is running at a time
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Here's an implementation that uses a lockfile and echoes a PID into it. This serves as a protection if the process is killed before removing the pidfile:
LOCKFILE=/tmp/lock.txt
if [ -e ${LOCKFILE} ] && kill -0 `cat ${LOCKFILE}`; then
echo "already running"
exit
fi
# make sur...
What are some popular naming conventions for Unit Tests? [closed]
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I am pretty much with you on this one man. The naming conventions you have used are:
Clear about what each test state is.
Specific about the expected behaviour.
What more do you need from a test name?
Contrary to Ray's answer I don't thin...
Is it possible to change the package name of an Android app on Google Play?
I would like to know whether it is technically possible, not whether it is easy or not, to change the actual package name of an Android app that is on Google Play. What I mean by package name is the name that will show up in the URL. Please, can anyone tell me why this is / is not possible?
Thanks!
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How to determine if a list of polygon points are in clockwise order?
...on-convex polygon, such as a crescent. Here's a simple one that will work with non-convex polygons (it'll even work with a self-intersecting polygon like a figure-eight, telling you whether it's mostly clockwise).
Sum over the edges, (x2 − x1)(y2 + y1). If the result is positive the curve is cloc...
What is the difference between loose coupling and tight coupling in the object oriented paradigm?
...e another.
This scenario arises when a class assumes too many responsibilities, or when one concern is spread over many classes rather than having its own class.
Loose coupling is achieved by means of a design that promotes single-responsibility and separation of concerns.
A loosely-coupled clas...
What is the 'dynamic' type in C# 4.0 used for?
C# 4.0 introduced a new type called 'dynamic'. It all sounds good, but what would a programmer use it for?
10 Answers
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Command-line svn for Windows?
...nding option is not checked.
The svn.exe executable is not standalone and it depends on some other files in the distribution but this should not be a problem in most cases.
Once installed you might need to add the folder containing svn.exe to the system PATH as described here so that it is availab...