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I know that it's creating a reference in other cases. But what happens here?
$crawler = &new MyCrawler();
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Speaking of the meaning of the song, Vegard characterizes it as coming from "a genuine wonder of what the fox says, because we didn't know". Although interpreted by some commentators as a reference to the furry fandom, the brothers have stated they did not know about its existence when producing "The Fox".
One of the most common fox vocalizations is a raspy bark. Scientists believe foxes use this barking sound to identify themselves and communicate with other foxes. Another eerie fox vocalization is a type of high-pitched howl that's almost like a scream.
On your phone, touch and hold the Home button or say "Hey Google." Ask "What's this song?" Play a song or hum, whistle, or sing the melody of a song. Hum, whistle, or sing: Google Assistant will identify potential matches for the song.
It creates an instance of MyCrawler and passes the reference for that instance into $crawler. In PHP5 this is assumed so the use of the & is deprecated.
See Object References (the Ampersand).
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That is deprecated per the PHP documentation
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