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@ 2019-11-06T13:42:48Z

<?php

$string = "This is a string";

$words = explode(' ', $string);
$pairs = [];

for ($x = 0; $x < (count($words) -1); $x++) {
    $pairs[$x] = $words[$x] .' ' . $words[$x + 1];
}

var_dump($pairs);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
explode: documentation ( source)

preferences:dark modelive previewkey bindings

30.44 ms | 405 KiB | 5 Q