function AbstractString::ensureStart

File

vendor/symfony/string/AbstractString.php, line 290

Class

AbstractString

Represents a string of abstract characters.

Namespace

Symfony\Component\String

Code

public function ensureStart(string $prefix) : static {
    $prefix = new static($prefix);
    if (!$this->startsWith($prefix)) {
        return $this->prepend($prefix);
    }
    $str = clone $this;
    $i = $prefixLen = $prefix->length();
    while ($this->indexOf($prefix, $i) === $i) {
        $str = $str->slice($prefixLen);
        $i += $prefixLen;
    }
    return $str;
}