Article: For example if i tried to echo $input outside of the function, PHP would throw an error because i have not created that variable outside of the function. So note that variables created in a function (including the arguments) can only be used inside that function. Variables declared outside of a function can only be used outside of functions (unless you use them as an argument of course).That said, there is a command that allows you, in a function, to use a variable created outside a function. That command is "global", in the code above we use global with the variable $num so we could change it or access its value in our function. If you test the code, you will get the values 50 and 240. Build your own function that is really useful. Use them in your future PHP projects. Using functions can improve code modularity and the size of the overall project.
Question: What is a summary of what this article is about?
Add three lines of code to your script. Add these before any other code at the beginning of your function. Add this line right after the closing curly brace of your function. For sake of clarity here is the entire code sample. A variable declared inside a function cannot be used outside the function. Play around with functions!

Problem: Article: Look for places near your school like indoor play parks, arcades, and children's museums. Contact the marketing director at these places and ask if they'd put up a flyer for your preschool in return for you posting one of their advertisements in your building. Call up the heads of other preschools in town and see if they'd be open to a referral exchange. Offer to refer parents to them when your preschool is full. Not all preschools in your area will be keen to cooperate with their competition, but if you can find 1 or 2 who are willing to team up, this can be a great way to get free advertising. Your local paper isn't likely to give you free advertising for no reason, but if you can suggest a good story, they'll probably be happy to include you in the article. Do you have any specific education or training that makes you an expert in your field? Offer to share your professional opinion on a recent study regarding preschool or early childhood education. Invite the journalist to observe at your business to follow up on the study. Suggest an article about the types of things children learn in preschool, offering exclusive access to observe your class. Stage an event, such as a parade or rocket launch to market your preschool. Invite the press a couple weeks ahead of time to take pictures and observe. Getting involved in local events is a great way to make business contacts and find new students. For instance, sponsoring a Little League team is a great way to spread awareness about your school among parents of small children, and it can build goodwill in your community as well.
Summary: Team up with local businesses where parents take preschool-age children. Build relationships with a few other quality preschools in the area. Contact the local newspaper to write a story featuring your preschool. Sponsor a charity event or Little League team.

INPUT ARTICLE: Article: Go to https://photos.google.com/. This will open a page with your Android's photos if they are backed up. You may first have to sign into your Google account with your email address and password if this is your first time opening Google Photos. This blue button is in the top-right side of the page. Clicking it prompts a File Explorer (Windows) or Finder (Mac) window to open. Click a folder with photos in it on the left side of the File Explorer or Finder window. Click and drag your mouse across a group of pictures you want to select, or hold down Ctrl (Windows) or Command (Mac) and click each picture you want to select individually. It's in the bottom-right corner of the window. Check one of the following options: High quality - Uploads the photo(s) in high quality resolution at a reduced file size. This does not count against your Google Drive storage limit. Original - Uploads the photo(s) in the original resolution, which may be higher than the "High quality" option. This counts against your Google Drive storage limit. This option is in the bottom-right corner of the quality window. Doing so will prompt the photo(s) to begin uploading to your Google Photos account. This app resembles a red, yellow, green, and blue four-point star. If you aren't signed into Google Photos, you'll first enter your email address and password when prompted. It's in the top-left corner of the screen. A pop-out menu will appear. It's near the bottom of the pop-out menu. This is near the top of the Settings menu. If it isn't, tap the switch to turn on backup for your photos. This will enable synchronization between your Google Photos account and the Google Photos app, which will put the photo(s) you just uploaded to Google Photos on your Android.

SUMMARY: Open the Google Photos website on a computer. Click UPLOAD. Click your photos' location. Select photos to upload. Click Open. Select an upload quality. Click CONTINUE. Open Google Photos on your Android. Tap . Tap Settings. Tap Back up & sync. Make sure the switch is set to "On" .

Windows gives you a few options if you want to change your desktop image, but if you want a truly personalized wallpaper, then you'll need to find or make one. First, you'll need to know what size image you'll be downloading. Open up your Display utility. In Windows XP, 7, and 8, open the Control Panel and then open Display. In Windows Vista, open the Control Panel, open Personalization, then click Display Settings at the Bottom. For the best-looking desktop image, you'll want one that matches the size of your desktop. This will keep it from stretching or repeating. Look for the slider in the Display window that lists how many pixels the desktop is made of. For example, it might say "1920 by 1080 pixels". This means that your monitor is displaying an image 1920 pixels wide by 1080 pixels in height. Use popular image search engines to find a new picture for your desktop. Open the Search Tools, click Size, and then select Exact. Enter in the size of your desktop to only search for images that size. Once you find an image you like, save it to your computer. Open up the Personalization tool in the Control Panel. This could be listed in the Appearance and Personalization category, depending on how your Control Panel is set up. From here, open the Desktop Background option. Click Browse to search your computer for the image you downloaded. If you didn't download an image the same size as your desktop, you have the options to stretch it, tile it, or leave it with black borders.
++++++++++
One-sentence summary --
Get a new wallpaper image. Make a note of your desktop size. Download an image. Set the wallpaper.