<?php
// https://gist.github.com/dave1010/11393640
class Bar{}
$bars = [new Bar, new Bar, new Bar];
$ints = [1, 2, 3];
// without variadics
// lots of manual type checking
function oldFoo($bars)
{
foreach ($bars as $bar) {
if (!$bar instanceof Bar) {
throw new InvalidArgumentException("Must be a Bar.");
}
}
echo "Got " . count($bars) . " bars.\n";
}
// php 5.6 style
// just look at this lovely type checking!
function foo(Bar ...$bars)
{
echo "Got " . count($bars) . " bars.\n";
}
foo(...$bars);
// fatal error
foo(...$ints);
oldFoo($bars);
// InvalidArgumentException
oldFoo($ints);
Got 3 bars.
Fatal error: Uncaught TypeError: foo(): Argument #1 must be of type Bar, int given, called in /in/Pj7m9 on line 31 and defined in /in/Pj7m9:23
Stack trace:
#0 /in/Pj7m9(31): foo(1, 2, 3)
#1 {main}
thrown in /in/Pj7m9 on line 23
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Got 3 bars.
Fatal error: Uncaught TypeError: Argument 1 passed to foo() must be an instance of Bar, int given, called in /in/Pj7m9 on line 31 and defined in /in/Pj7m9:23
Stack trace:
#0 /in/Pj7m9(31): foo(1, 2, 3)
#1 {main}
thrown in /in/Pj7m9 on line 23
Process exited with code 255.
Output for 7.3.12 - 7.3.33
Got 3 bars.
Fatal error: Uncaught TypeError: Argument 1 passed to foo() must be an instance of Bar, int given, called in /in/Pj7m9 on line 31 and defined in /in/Pj7m9:23
Stack trace:
#0 /in/Pj7m9(31): foo(1, 2, 3)
#1 {main}
Next TypeError: Argument 2 passed to foo() must be an instance of Bar, int given, called in /in/Pj7m9 on line 31 and defined in /in/Pj7m9:23
Stack trace:
#0 /in/Pj7m9(31): foo(1, 2, 3)
#1 {main}
Next TypeError: Argument 3 passed to foo() must be an instance of Bar, int given, called in /in/Pj7m9 on line 31 and defined in /in/Pj7m9:23
Stack trace:
#0 /in/Pj7m9(31): foo(1, 2, 3)
#1 {main}
thrown in /in/Pj7m9 on line 23
Process exited with code 255.
Got 3 bars.
Fatal error: Uncaught TypeError: Argument 1 passed to foo() must be an instance of Bar, integer given, called in /in/Pj7m9 on line 31 and defined in /in/Pj7m9:23
Stack trace:
#0 /in/Pj7m9(31): foo(1, 2, 3)
#1 {main}
Next TypeError: Argument 2 passed to foo() must be an instance of Bar, integer given, called in /in/Pj7m9 on line 31 and defined in /in/Pj7m9:23
Stack trace:
#0 /in/Pj7m9(31): foo(1, 2, 3)
#1 {main}
Next TypeError: Argument 3 passed to foo() must be an instance of Bar, integer given, called in /in/Pj7m9 on line 31 and defined in /in/Pj7m9:23
Stack trace:
#0 /in/Pj7m9(31): foo(1, 2, 3)
#1 {main}
thrown in /in/Pj7m9 on line 23
Process exited with code 255.
Output for 5.6.0 - 5.6.30
Got 3 bars.
Catchable fatal error: Argument 1 passed to foo() must be an instance of Bar, integer given, called in /in/Pj7m9 on line 31 and defined in /in/Pj7m9 on line 23
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38
Parse error: syntax error, unexpected '.', expecting '&' or variable (T_VARIABLE) in /in/Pj7m9 on line 23
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/Pj7m9 on line 6
Process exited with code 255.