Basic programming structures

• - Variables: dynamically typed, preceded by $
• • $a=5; $a=$a+8; print "$a";

• - Arrays
• • $a=[4,1,2]; a[15]="a string"; print "$a[0],$a[15]";

• - For loop
• • for($k=0; $k<10; $k++) {...}

• - Foreach loop
• • foreach($container as $value) {... $value ...};
  • foreach($container as $key=>$value) {... $key ... $value ...};