PHP 7 brings a lot of improvements, features and new operators as compared to the earlier versions on PHP. One of the new operators is the Null Coalesce Operator (??). This operator can be used instead of using isset() along with the ternary operator (?:). The Null coalesce operator (??) returns the result of its […]
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Recently I had to write a script to create a zip file containing different files and folders. PHP has a ZipArchive class which can be used easily to create zip files. In this article we will see how to create zip files in PHP. We will create different zip files from different files and folders.
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CSV (comma-separated values) is one of the most popular methods for transferring tabular data between applications. Lot of applications want to export data in a CSV file. In this article we will see how we can create CSV file using PHP. We will also see how to automatically download the file instead of just showing
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In this article we will see how to sort a multi-dimension array by value of one of the keys of the array. We can use a few different methods to do this. One way to to use usort() function. Another way is to just identify the values and create another array with the values and
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NOTE: From WordPress 4.3 onwards, it is recommended that you use the Site Icon feature that is built into WordPress, instead of following the guidance below. The Site Icon feature can be found by going to Appearance -> Customize and clicking on Site Identity. In my earlier post Understanding favicon I explained what is a
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