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-rw-r--r--php.html.markdown19
1 files changed, 13 insertions, 6 deletions
diff --git a/php.html.markdown b/php.html.markdown
index 5bc2ddce..127e601b 100644
--- a/php.html.markdown
+++ b/php.html.markdown
@@ -104,7 +104,8 @@ END;
echo 'This string ' . 'is concatenated';
// Strings can be passed in as parameters to echo
-echo 'Multiple', 'Parameters', 'Valid';
+echo 'Multiple', 'Parameters', 'Valid'; // Returns 'MultipleParametersValid'
+
/********************************
* Constants
@@ -117,8 +118,10 @@ echo 'Multiple', 'Parameters', 'Valid';
// followed by any number of letters, numbers, or underscores.
define("FOO", "something");
-// access to a constant is possible by direct using the choosen name
-echo 'This outputs '.FOO;
+// access to a constant is possible by calling the choosen name without a $
+echo FOO; // Returns 'something'
+echo 'This outputs '.FOO; // Returns 'This ouputs something'
+
/********************************
@@ -159,9 +162,9 @@ echo('Hello World!');
print('Hello World!'); // The same as echo
-// echo is actually a language construct, so you can drop the parentheses.
+// echo and print are language constructs too, so you can drop the parentheses
echo 'Hello World!';
-print 'Hello World!'; // So is print
+print 'Hello World!';
$paragraph = 'paragraph';
@@ -219,7 +222,11 @@ assert($a !== $d);
assert(1 === '1');
assert(1 !== '1');
-// spaceship operator since PHP 7
+// 'Spaceship' operator (since PHP 7)
+// Returns 0 if values on either side are equal
+// Returns 1 if value on the left is greater
+// Returns -1 if the value on the right is greater
+
$a = 100;
$b = 1000;