In this branch, the function will implicitly return null which is incompatible with the type-hinted return Zwarthoorn\Ping\Entity\Url. Consider adding a return statement or allowing null as return value.
For hinted functions/methods where all return statements with the correct type are only reachable via conditions, ?null? gets implicitly returned which may be incompatible with the hinted type.
Let?s take a look at an example:
interfaceReturnsInt{publicfunctionreturnsIntHinted():int;}classMyClassimplementsReturnsInt{publicfunctionreturnsIntHinted():int{if(foo()){return123;}// here: null is implicitly returned}}
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}
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public function addUrl(string $url): self {
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if ($this->chekcIfValidUrl($url) === false) {
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throw new \RuntimeException('Not a good url.');
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}
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$this->urlEntity->addUrl($url);
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return $this;
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}
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public function addMultipleUrls(array $urlArray): self {
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foreach ($urlArray as $url){
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$this->addUrl($url);
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}
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return $this;
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}
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public function removeUrl($url): self {
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if ($url === null)
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{
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throw new RuntimeException('There is no url supplied');
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}
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$this->urlEntity->removeUrl($url);
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return $this;
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}
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private function chekcIfValidUrl(string $url) :bool {
zwarthoorn /
ping
For hinted functions/methods where all return statements with the correct type are only reachable via conditions, ?null? gets implicitly returned which may be incompatible with the hinted type. Let?s take a look at an example: