Showing posts with label cli. Show all posts
Showing posts with label cli. Show all posts

Monday, 12 May 2014

Introduction to the PHP5 Command Line Interface (Ubuntu version)

So you'd like to write and run your PHP5 code without using a web browser. Where you run it from the command-line....

First make sure that the php5 cli is installed by typing this on the command line (terminal, shell, whatever you want to call it) :

sudo apt-get install php5-cli

Now it's time to create your first command line script to test. Use your favourite editor to create the following program and save it as hello.php:

<?php
echo 'hello world!';
?>

Now back to the command line. Make sure you are in the same directory as hello.php was saved. Now type:
php5 hello.php

You should see that hello world! is echo'd to the command line.

Now the following program:

  • Takes the first number
  • Assigns it to a variable ($first)
  • Takes the second number
  • Assigns it to a variable ($second)
  • Adds the two numbers together and assigns them to the variable $answer
  • Echo's the value of the variable $answer, then adds a line break.


<?php
echo 'Enter first number ';
$first = fgets(STDIN);
echo 'Enter second number ';
$second = fgets(STDIN);
$answer = $first + $second;
echo 'And the answer is '.$answer.PHP_EOL;
?>

Now you're ready to go.