Remove unnecessary uses of `implode()`

TysonAndre / phan

Phan is a static analyzer for PHP. Phan prefers to avoid false-positives and attempts to prove incorrectness rather than correctness.

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Remove unnecessary uses of `implode()` #137

Closed TysonAndre closed 6 years ago

TysonAndre commented 6 years ago

$x .= $str is efficient and doesn't require creating a temporary array. PHP can efficiently append if there aren't any other references to that string