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PHP: How to check if image file exists?
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You need the filename in quotation marks at least (as string):
if (file_exists('http://www.mydomain.com/images/'.$filename)) {
… }
Also, make sure $filename is properly validated. And then, it will only work when allow_url_fopen is activated in your PHP config
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How to keep indent for second line in ordered lists via CSS?
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@Perelli foo is just an arbitrary string (id), it is used to connect the counter-reset, counter-increment and counter() properties.
– user123444555621
Aug 8 '13 at 18:04
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How do I replace a git submodule with another repo?
... file
Delete the relevant section from .git/config
Run git rm --cached path_to_submodule (no trailing slash)
Commit and delete the now untracked submodule files
Now, add the new submodule with the --name flag. This will give git an alternate name to reference in .git/config for the submodule, to ...
Getting the IP address of the current machine using Java
... is := 10.100.98.228
getHostAddress() returns
Returns the IP address string in textual presentation.
OR you can also do
InetAddress IP=InetAddress.getLocalHost();
System.out.println(IP.toString());
Output = IP of my system is := RanRag-PC/10.100.98.228
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Taskkill /f doesn't kill a process
...too if any spawned to kill successfully your process
taskkill /IM "process_name" /T /F
/T = kills child process
/F = forceful termination of your process
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Getting the exception value in Python
...rror message.
It should be noted that just using str will return an empty string if there's no error message whereas using repr as pyfunc recommends will at least display the class of the exception. My take is that if you're printing it out, it's for an end user that doesn't care what the class is ...
BigDecimal - to use new or valueOf
...don't do the same thing. BigDecimal.valueOf(double) will use the canonical String representation of the double value passed in to instantiate the BigDecimal object. In other words: The value of the BigDecimal object will be what you see when you do System.out.println(d).
If you use new BigDecimal(d...
What does “Content-type: application/json; charset=utf-8” really mean?
...7 has been obsoleted by RFC7159, which states that the root value may be a string (in explicit contrast to the former spec), how is this now implemented? The spec is vague in this regard, and just says that three encodings are allowed, but not how one is supposed to differentiate them.
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getActionBar() returns null
...d:debuggable="false"
android:icon="@drawable/icon"
android:label="@string/app_name"
android:theme="@style/Theme.NoTitle"> // remove this line if you have this in your code
<activity
android:name="com.xxx.yyy.Activity"
android:configChanges="orientation|keyboardHid...
APT command line interface-like yes/no input?
.../no question via raw_input() and return their answer.
"question" is a string that is presented to the user.
"default" is the presumed answer if the user just hits <Enter>.
It must be "yes" (the default), "no" or None (meaning
an answer is required of the user).
Th...