Well, this article is on PHP Generators, so why are we talking about speed? As you are soon about to find out, generators make a huge difference in speed and memory management. What are PHP Generators?Īdded to PHP in version 5.5, generators are functions that provide a simple way to loop through data without the need to build an array in memory. Still a bit confused? An example is a good way to show generators in action.įirst, let’s quickly create a generator.php file that we will use throughout this tutorial. We can quickly spin up an inbuilt PHP server in the directory where we created the generator.php file: After creating the file, we add this little code snippet. So if we go to we should get something like this. PHP MAKER VS PHP REPORT MAKER CODEīut if we go back into our code and make a little change " The code is pretty much self-explanatory, and this definitely doesn’t look like much. Now, the upper range(max) of generated numbers is PHP INTMAX, which is the largest number that your version of PHP can reach. After doing this, head over to the browser and refresh. But this time, you’ll notice something different. The generator script throws a warning error. Well, that’s a shame, PHP ran out of memory. Possible solutions that come to mind include going into php.ini and increasing memory_limit.
Let’s ask ourselves these questions, is this really effective? Do we want a single script to hog all our server’s memory? The answers are no and no. This is not effective, and we do not want a single script to use up all our memory. Let’s define the same function above, call it with the same value PHP INTMAX and run it again. PHP MAKER VS PHP REPORT MAKER GENERATORīut, this time, we will be creating a generator function. " ĭissecting the getRange function, this time, we only loop through the values and yield an output. yield is similar to return as it returns a value from a function, but the only difference is that yield returns a value only when it is needed and does not try to keep the entire dataset in memory. If you head over to your browser, you should see data being displayed on the page. Given the appropriate time, the browser eventually displays the data. PHP MAKER VS PHP REPORT MAKER GENERATOR.
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