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24 lines
837 B
PHP
24 lines
837 B
PHP
<?php
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// In the tradition of our ancestors, let's start with a hello world program.
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// All PHP files must start with a <?php tag unless it is for a html template.
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// (We will learn about html templates later.)
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echo "Hello World!\n";
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// There is a lot going on in this statement so let's work through it.
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// First, the echo keyword tells PHP to output some text.
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echo "I am some text\n";
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// Second, PHP stores text in strings.
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// To write a string, you surround letters with single or double quotes.
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// Double quoted strings can hold special characters like \n which tells PHP to start a new line.
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"\nI am a string on a new line";
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// Third, all lines of code in PHP must end in a semi-colon.
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echo "No semi-colon is a no-no\n";
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// Using semi-colons means we can write multiple statements on one line.
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echo "Hello"; echo " World\n";
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