PHP Knowledge Base

Error Messages/
Object-Oriented Programming/
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Example(s): echo function shortcut
Example: file_get_contents
Example: file_put_contents
Example: file_get_contents and FILTER_SANITIZE_STRING
Example(s): loop through an array of variables
Example(s): nl2br
Example: simple object (instantiated class) and how to access a property and a method
Example(s): simple prepared statement (insert)
Example(s): printf and placeholders
Example(s): row count with PDO
Example(s): MySQLi Object-oriented SELECT Statement
Example(s): PHP PDO SELECT Statement
Example(s): PHP PDO SELECT Query: Selecting multiple rows (phpdelusions.net approved)
Example(s): Return a single row using PHP PDO
Example(s): SUM() PHP PDO/MySQL
Example(s): sprintf
Example(s): file_exists
Formatting Numbers: How to Always Get 2 Digits
Formatting Numbers: How to Always Get 2 Decimal Places
$_SERVER['DOCUMENT_ROOT']
Difference Between echo and return
Difference Between include and require
Double-quoted strings and complex variables (array or object property)
PHP MySQLi Functions
Why You Should Be Using PHP's PDO for Database Access
List All Session Variables
The Ternary Operator
PHP date format characters
PHP time format characters
PHP Regular Expressions: Greedy versus Lazy Quantifiers
Delete Blank Lines from Text
Add one week to a user defined date
Using variables in preg_replace()
Loop through a simple array using foreach
Loop through an associative array
Loop through a multidimensional array
Set and format current date using DateTime class
Format date using DateTime class
Format Date using strtotime() function
Get and Format Current Date Using date()
Examples: preg_replace
pathinfo
Get 'key'/'column' from multidimensional array using array_column()
PHP to Upload a File Using HTML Form
Permissions
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