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What is mod_php?

...he PHP executable file, and the server runs that executable, giving it the script you called, each time you visit a page. That means each time you load a page, PHP needs to read php.ini and set its settings, it needs to load all its extensions, and then it needs to start work parsing the script - th...
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Which $_SERVER variables are safe?

...s should be rejected by the web server and not cause the invocation of the script to begin with. Hence they can be considered reliable. 'HTTPS' 'REQUEST_TIME' 'REMOTE_ADDR' * 'REMOTE_HOST' * 'REMOTE_PORT' * 'SERVER_PROTOCOL' 'HTTP_HOST' † 'SERVER_NAME' † 'SCRIPT_FILENAME' 'SERVER_PORT' ‡ 'SC...
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How can I recall the argument of the previous bash command?

...ment from previous command !^ - first argument (after the program/built-in/script) from previous command !! - previous command (often pronounced "bang bang") !n - command number n from history !pattern - most recent command matching pattern !!:s/find/replace - last command, substitute find with repl...
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How to loop over files in directory and change path and add suffix to filename

I need to write a script that starts my program with different arguments, but I'm new to Bash. I start my program with: 5 A...
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Why does 'continue' behave like 'break' in a Foreach-Object?

If I do the following in a PowerShell script: 4 Answers 4 ...
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How to use timeit module

...) y = range(100) and times sum(x) min(y) If you want to have longer scripts you might be tempted to move to timeit inside a Python script. I suggest avoiding that because the analysis and timing is simply better on the command line. Instead, I tend to make shell scripts: SETUP=" ... # lot...
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Bootstrap select dropdown list placeholder

...splay: none;} select option{color: #555;} // bootstrap default color <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <select class="form-control placeholder"> <option value="">Your Placeholder Text</option> <option ...
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Is Tomcat running?

...e pid has been written to the $CATALINA_PID file? I have a cron'd checker script which sends out an email when tomcat is down: kill -0 `cat $CATALINA_PID` > /dev/null 2>&1 if [ $? -gt 0 ] then echo "Check tomcat" | mailx -s "Tomcat not running" support@dom.com fi I guess you could ...
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Are global variables in PHP considered bad practice? If so, why?

...ed carefully can make problems harder to find. Let's say you request a php script and you get a warning saying you're trying to access an index of an array that does not exist in some function. If the array you're trying to access is local to the function, you check the function to see if you have...
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How can I add a class to a DOM element in JavaScript?

...head> <body> <div id="dd"></div> <script> (function(){ var countup = this; var newNode = document.createElement('div'); newNode.className = 'textNode news content'; newNode.innerHT...