Guess outputBeginner5 questions

PHP type juggling: guess the output

Loose comparison, numeric strings and floats. Five short snippets, one output each.

01What does this print on PHP 8?
```
<?php

var_dump(0 == "a");
```
abool(true)bbool(false)cint(0)dA TypeError is thrown
02What does this print?
```
<?php

var_dump("1" == "01");
```
abool(true)bbool(false)cbool(true) only on PHP 7dA warning, then bool(false)
03What does this print?
```
<?php

var_dump(null == false, null === false);
```
abool(true) bool(true)bbool(false) bool(false)cbool(true) bool(false)dbool(false) bool(true)
04What does this print?
```
<?php

echo "5" + "5", "5" . "5";
```
a1010b5555c1055d5510
05What does this print?
```
<?php

var_dump(0.1 + 0.2 == 0.3);
```
abool(true)bbool(false)cfloat(0.3)dA deprecation notice

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