PHP in 2012

New notice on array to string conversion


<?php
error_reporting(-1);
$a = [1,2,3];
echo $a;

Output

Array

Careful


<?php
$a = [1,2,3];
$b = [3,4,5];
print_r(array_intersect($a,$b));

Output

Array ( [2] => 3 )


<?php
$a = [1,2,[3]];
$b = [[3],4,5];
print_r(array_intersect($a,$b));

Output

Array ( [2] => Array ( [0] => 3 ) )


<?php
$a = [1,2,[3]];
$b = [[999],4,5];
print_r(array_intersect($a,$b));

Output

Array ( [2] => Array ( [0] => 3 ) )


<?php
$a = [1,2,[3]];
$b = ['Array',4,5];
print_r(array_intersect($a,$b));

Output

Array ( [2] => Array ( [0] => 3 ) )