What is the meaning of ‘escaping to PHP’? ![]() If you define the function name in lowercase and call them in uppercase, it will still work. User-defined functions are not case sensitive but the rest of the language is case-sensitive. The variable names are case-sensitive but function names are not. To execute a PHP script, use the PHP Command Line Interface (CLI) and specify the file name of the script in the following way: How to execute a PHP script from the command line? Its content is regenerated every time a user visits or reloads. In dynamic websites, content of script can be changed at the run time. You cannot change anything in the site as it is predefined. In static websites, content can’t be changed after running the script. ![]() What is the difference between static and dynamic websites? Static Websites It also provides a command line interface to install “packages” automatically. It contains all types of PHP code snippets and libraries. PEAR stands for PHP Extension and Application Repository. PEAR is a framework and repository for reusable PHP components. Using PHP, you can restrict users to access some pages of your website and also encrypt data.Access cookies variables and set cookies.You can add, delete, modify elements within your database with the help of PHP.gather data from files, save data to a file, through email you can send data, return data to the user. from files on a system it can create, open, read, write, and close them. What are the common uses of PHP? Uses of PHP Let’s begin with the first section of PHP interview questions. The PHP Interview Questions are divided into 2 sections: These PHP Interview Questions and Answers are collected after consulting with PHP Certification Trainingexperts. So, if you are planning to start your career in PHP and you wish to know the skills related to it, now is the right time to dive in. It is a widely used open-source programming language especially suited for creating dynamic websites and mobile API’s. Hopefully it can help someone else who needs to strip unwanted characters out of a PHP string.PHP is a recursive acronym for PHP Hypertext Preprocessor. I'm still a relative PHP newbie, but I at least know that this code works, so I thought I'd share it here. Given those character-stripping needs, here's the source code for PHP function named cleanString I created: Make the remaining characters lowercase.Limit the resulting string to eight characters.Strip all the characters from a string except the alphabet characters.(Again, I leave that output as "an exercise for the reader.") Bonus: A complete PHP string-cleaning functionīefore I go, I thought it might help to share the PHP function I wrote recently that led to this blog post.įor my purposes, I needed a PHP function to do the following things: (I'll leave that output to you.) Strip all characters but letters, numbers, and whitespaceįinally, if you want to strip all characters from your string other than letters, numbers, and whitespace, this regular expression will do the trick: Next, if we want to allow numbers as well as letters, we can modify our regular expression and preg_replace code to look like this: ![]() Strip all characters but letters and numbers from a PHP string If you put this line of code to work in a small PHP script, like this:Īnd then run that script, you’ll get the following output:Īs you can see, all the other characters have been stripped from the input string, leaving only letters in the resulting string. Here’s a quick PHP preg_replace example that takes a given input string, and strips all the characters from the string other than letters (the lowercase letters "a-z", and the uppercase letters "A-Z"): PHP string FAQ: How can I strip unwanted characters from a PHP string? (Also asked as, How can I delete unwanted characters from a PHP string?) Solution
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