The "Missing:"s below indicate that an entry is incomplete.

• either the entry exist in the language, and please tell.
• either the entry doesn't exist in the language, and please tell so. The entry will be marked as such and won't appear as missing anymore.

See the various entries for PHP

• Category: Object Oriented, Dynamically typed

• Various

  == !=	equality / inequality (deep)
  === !==	equality / inequality (shallow)

  Missing:

  
  tokens (what is the standard way for scrunching together multiple words)
  breaking lines (useful when end-of-line and/or indentation has a special meaning)
  comparison (min / max (binary or more))
  force garbage collection

• Functions

  Missing:

  
  function definition
  function called when a function is not defined (in dynamic languages)
  runtime inspecting the caller information

• Control Flow

  try a catch (exn) ...	exception (catching)
  throw new exception	exception (throwing)

  Missing:

  
  loop (forever loop)
  loop (do something until condition)
  breaking control flow (goto (unconditional jump))

• Object Oriented & Reflexivity

  clone $o

  object cloning

  Missing:

  
  method invocation (with no parameter)
  manually call an object's destructor
  get the type/class corresponding to an object/instance/value
  inheritance
  has the method
  accessing parent method

• Package, Module

  Missing:

  
  package scope
  declare
  import

• Strings

  Missing:

  
  character "z"
  strings (end-of-line (without writing the real CR or LF character))
  multi-line
  convert something to a string (see also string interpolation)
  string equality & inequality
  upper / lower case character
  locate a substring
  locate a substring (starting at the end)

• Bags and Lists

  Missing:

  
  list flattening
  list constructor
  adding an element at index
  first element
  all but the first element
  last element
  smallest / biggest element

• Various Data Types

  Missing:

  
  tuple constructor
  computable tuple (these are a kind of immutable lists playing a special role in parameter passing) (empty tuple)
  computable tuple (these are a kind of immutable lists playing a special role in parameter passing) (1-uple)
  computable tuple (these are a kind of immutable lists playing a special role in parameter passing) (using a tuple for a function call)
  reference (pointer) (creation)
  reference (pointer) (dereference)
  optional value (null value)
  optional value (value)
  record (selector)

• Mathematics

  Missing:

  
  numbers syntax (integers)
  numbers syntax (integers in base 2, octal and hexadecimal)
  numbers syntax (decimals)
  addition / subtraction / multiplication / division
  negation
  random (random number)
  random (seed the pseudo random generator)
  operator priorities and associativities
  trigonometry (inverse)
  bitwise operators