default keyword in php

256

what does the keyworddefault in php do? there's no documentation on http://php.net/default, but i get an error when using it as a function name: »unexpected T_DEFAULT, expecting T_STRING«

what does it do/where can i find information about it?

316

Answer

Solution:

default is part of theswitch statement:

switch ($cond) {
  case 1:
    echo '$cond==1';
    break;
  case 2:
    echo '$cond==2';
    break;
  default:
    echo '$cond=="whatever"';
}

185

Answer

Solution:

Thedefault keyword is used in the :

$value = 'A';
switch ($value) {
case 'A':
case 'B':
    echo '$value is either A or B.';
break;
case 'C':
    echo '$value is C.';
break;
default:
    echo '$value is neither A, nor B, nor C.';
}

The default case matches anything that wasn’t matched by the other cases.

965

Answer

Solution:

Adding to others answers:

default is a PHP keyword and keywords cannot be used as function name.

When you try:

function default () {
 ....
}

PHP expects to see aT_STRING ( an identifier) after the keywordfunction but sees aT_DEFAULT and flags a parse/syntax error:

unexpected T_DEFAULT, expecting T_STRING

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