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authorLevi Bostian <levi.bostian@banno.com>2013-11-25 09:42:37 -0600
committerLevi Bostian <levi.bostian@banno.com>2013-11-25 09:42:37 -0600
commitaf6701904b459b16cf65709cd8c70fd2f5519457 (patch)
tree68cb4bf9ead32686f492e68528e9f0761e41c500 /php.html.markdown
parentdf3cc00f5233dac96c0e063d87d3552f493e25f6 (diff)
parentd24c824d388669181eed99c3e94bb25c2914304a (diff)
Fix conflict bash.
Diffstat (limited to 'php.html.markdown')
-rw-r--r--php.html.markdown44
1 files changed, 35 insertions, 9 deletions
diff --git a/php.html.markdown b/php.html.markdown
index 083574ee..c3317d59 100644
--- a/php.html.markdown
+++ b/php.html.markdown
@@ -11,7 +11,7 @@ This document describes PHP 5+.
```php
<?php // PHP code must be enclosed with <?php tags
-// If your php file only contains PHP code, it is best practise
+// If your php file only contains PHP code, it is best practice
// to omit the php closing tag.
// Two forward slashes start a one-line comment.
@@ -59,6 +59,9 @@ $float = 1.234;
$float = 1.2e3;
$float = 7E-10;
+// Delete variable
+unset($int1)
+
// Arithmetic
$sum = 1 + 1; // 2
$difference = 2 - 1; // 1
@@ -69,7 +72,7 @@ $quotient = 2 / 1; // 2
$number = 0;
$number += 1; // Increment $number by 1
echo $number++; // Prints 1 (increments after evaluation)
-echo ++$number; // Prints 3 (increments before evalutation)
+echo ++$number; // Prints 3 (increments before evaluation)
$number /= $float; // Divide and assign the quotient to $number
// Strings should be enclosed in single quotes;
@@ -104,7 +107,7 @@ echo 'This string ' . 'is concatenated';
/********************************
* Constants
*/
-
+
// A constant is defined by using define()
// and can never be changed during runtime!
@@ -136,6 +139,11 @@ echo $associative['One']; // prints 1
$array = ['One', 'Two', 'Three'];
echo $array[0]; // => "One"
+// Add an element to the end of an array
+$array[] = 'Four';
+
+// Remove element from array
+unset($array[3]);
/********************************
* Output
@@ -176,6 +184,11 @@ $y = 0;
echo $x; // => 2
echo $z; // => 0
+// Dumps type and value of variable to stdout
+var_dump($z); // prints int(0)
+
+// Prints variable to stdout in human-readable format
+print_r($array); // prints: Array ( [0] => One [1] => Two [2] => Three )
/********************************
* Logic
@@ -442,8 +455,10 @@ class MyClass
// Static variables and their visibility
public static $publicStaticVar = 'publicStatic';
- private static $privateStaticVar = 'privateStatic'; // Accessible within the class only
- protected static $protectedStaticVar = 'protectedStatic'; // Accessible from the class and subclasses
+ // Accessible within the class only
+ private static $privateStaticVar = 'privateStatic';
+ // Accessible from the class and subclasses
+ protected static $protectedStaticVar = 'protectedStatic';
// Properties must declare their visibility
public $property = 'public';
@@ -463,10 +478,17 @@ class MyClass
print 'MyClass';
}
+ //final keyword would make a function unoverridable
final function youCannotOverrideMe()
{
}
+/*
+ * Declaring class properties or methods as static makes them accessible without
+ * needing an instantiation of the class. A property declared as static can not
+ * be accessed with an instantiated class object (though a static method can).
+*/
+
public static function myStaticMethod()
{
print 'I am static';
@@ -655,10 +677,14 @@ $cls = new SomeOtherNamespace\MyClass();
## More Information
-Visit the [official PHP documentation](http://www.php.net/manual/) for reference and community input.
+Visit the [official PHP documentation](http://www.php.net/manual/) for reference
+and community input.
-If you're interested in up-to-date best practices, visit [PHP The Right Way](http://www.phptherightway.com/).
+If you're interested in up-to-date best practices, visit
+[PHP The Right Way](http://www.phptherightway.com/).
-If you're coming from a language with good package management, check out [Composer](http://getcomposer.org/).
+If you're coming from a language with good package management, check out
+[Composer](http://getcomposer.org/).
-For common standards, visit the PHP Framework Interoperability Group's [PSR standards](https://github.com/php-fig/fig-standards).
+For common standards, visit the PHP Framework Interoperability Group's
+[PSR standards](https://github.com/php-fig/fig-standards).