- In this chapter, we'll dive into the wonderful world…of PHP functions.…PHP has a huge range of built-in function…designed to perform predefined tasks,…such as converting a string to uppercase,…getting the dimensions of an image,…sending an email, and so on.…In this video, we'll look at the basics…of working with functions.…And in this file, functions.php,…is an example of a built-in PHP function.…It's phpversion that repots the version of PHP…that's running on your server.…
The first thing to note about all functions…is that after the function name,…you'll always get a pair of parentheses.…The parentheses are like an operator…that tells the function to execute its predefined task,…but if I load this page into a browser,…I get a blank screen…and that's because most functions return a value,…but unless you do something with it,…it's simply thrown away.…So we could display the value…by using echo in front of phpversion…and that will then display the value that's returned.…
So if I load that into the browser,…it now displays the version of PHP that I'm running.…
Author
Released
11/20/2015- Naming variables
- Storing text as strings
- Doing calculations with PHP
- Using conditional statements to make decisions
- Creating custom functions
- Deciphering error messages
- Emailing the contents of an online form
- Dealing with multiple-choice form fields
Skill Level Beginner
Duration
Views
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Introduction
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Welcome1m 11s
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Using the exercise files4m 14s
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1. Checking Your Setup
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2. PHP Basics
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PHP: The big picture6m 39s
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Comments and white space6m 7s
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Joining strings9m 4s
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3. Making Decisions with Conditional Statements
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The truth according to PHP3m 21s
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Setting a default value8m 52s
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4. Doing Calculations with PHP
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Arithmetic operators9m 15s
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Challenge: Integer division1m 18s
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Solution: Integer division3m 27s
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5. Using Loops for Repetitive Actions
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Using a for loop5m 44s
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Alternative syntax for loops2m 32s
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6. Using Functions and Objects
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Creating custom functions7m 53s
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7. Including External Files
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Using server-side includes3m 32s
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Using include and require8m 16s
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Examining the include_path5m 12s
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8. Handling Errors
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Dealing with PHP errors1m 27s
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9. Emailing the Contents of an Online Form
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Blocking suspect phrases8m 2s
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Preparing to send email5m 10s
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Automating the reply address7m 46s
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Building the message body10m 18s
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Sending the email5m 7s
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Troubleshooting mail()3m 17s
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10. Dealing with Multiple-Choice Form Fields
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Introduction1m 58s
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Handling checkbox groups7m 26s
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Handling select menus6m 21s
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Conclusion
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Where next?1m 56s
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Video: Using PHP's built-in functions