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@ 2021-01-24T12:10:34Z

<?php

$sub = substr('abcdef', 4, -4);

if ($sub === false) {
    echo 'fail';
} else {
    echo 'do somthing with $sub';
}

Output
Performance
VLD
References
Branches

substr: documentation ( source)

preferences:dark modelive previewkey bindings

25.72 ms | 404 KiB | 5 Q