PHP intro

Annotations:

• http://www.w3schools.com/php/php_syntax.asp

1. Pēdiņas
   1. ( ' ... ' ) Rakstītais netiek interpretēts (kā teksts)
   2. ( " ..." ) Ietvertie operatori darbojas
2. Komentāri
   1. /* ... */ Bloks - no ... līdz
   2. // Rinda - lidz r. beigām
3. Teksta dalījums
   1. ( ; ) rindas beigas
   2. Funkcijas bloks { ... }

Annotations:

• http://www.w3schools.com/php/php_variables.asp

1. = "Teksts pēdiņās", skaitlis
2. $_variablis, $veelViens
3. Case-sensitive, A-z, 0-9, _
4. local, global, static
5. local global static

1. Arithmetic Compraison String Assignment Combination

   Annotations:

   • http://www.w3schools.com/php/php_operators.asp
2. assignment op. " = "
3. string concatenation op. " . "
4. vienāds " == ", nav vienāds " != ", identisks " === " ( vērtība un tips )
5. x += y ( x = x + y ) ; x -= y ( x = x - y )
6. ++$x ( $x +1 ) --$x ($x - 1 )

Annotations:

• http://www.w3schools.com/php/php_functions.asp
• Besides the built-in PHP functions, we can create our own functions. A function is a block of statements that can be used repeatedly in a program. A function will not execute immediately when a page loads. A function will be executed by a call to the function.

1. NOT case-sensitive
2. argument ~= variable
3. function familyName($fname)
4. function MyFunction($myArgs)
5. function MyFunc($arg1, $arg2, $arg3 = "Default value")

Annotations:

• http://www.w3schools.com/php/php_arrays.asp
• PHP 5 Array Functions  http://www.w3schools.com/php/php_ref_array.asp

1. Indexed - with a numeric index
2. Associative - with named keys
3. Multidimensional containing one or more arrays

1. while Loops

   Annotations:

   • http://www.w3schools.com/php/php_looping.asp
2. for Loops

   Annotations:

   • http://www.w3schools.com/php/php_looping_for.asp

Annotations:

• http://www.w3schools.com/php/php_if_else.asp http://www.w3schools.com/php/php_switch.asp

Annotations:

• http://www.w3schools.com/php/php_constants.asp

1. define(name, value, case-insensitive)

1. strlen, str_word_count

Annotations:

• include and require http://www.w3schools.com/php/php_includes.asp

1. include "<filename>" include_once "<fn>" require "<fn>" require_once "<fn>"