Online PHP editor | output for ro6Kb

@ 2016-12-21T16:04:34Z

<?php
$texto = "~0
11111111
~1
222222222
~2
3333333333

        ~end
~0
aaaaaaaaaaa
~1
bbbbbbbbbb
~2
cccccccccc
~3
ddddddddddd

        ~end



~0
yyyyyyyyyyy
xxxxxxxx
ffffffffff
~1
rrrrrrrrrrrr
        ~end";

$sub_bloques = [];
foreach(array_map('trim', explode("\n", $texto)) as $line) {
    if ($line && substr($line, 0, 1) !== '~') {
        $sub_bloques[] = $line;
    }
    if ($line == '~end') {
        $hola[] = $sub_bloques;
        $sub_bloques = [];
    }
}
var_dump($hola);

Output for 5.6.0 - 5.6.29, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.5 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3: array(3) { [0]=> array(3) { [0]=> string(8) "11111111" [1]=> string(9) "222222222" [2]=> string(10) "3333333333" } [1]=> array(4) { [0]=> string(11) "aaaaaaaaaaa" [1]=> string(10) "bbbbbbbbbb" [2]=> string(10) "cccccccccc" [3]=> string(11) "ddddddddddd" } [2]=> array(4) { [0]=> string(11) "yyyyyyyyyyy" [1]=> string(8) "xxxxxxxx" [2]=> string(10) "ffffffffff" [3]=> string(12) "rrrrrrrrrrrr" } }

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