PHP Array Operators
| Operator | Name | Description |
|---|---|---|
| x + y | Union | Union of x and y |
| x == y | Equality | True if x and y have the same key/value pairs |
| x === y | Identity | True if x and y have the same key/value pairs in the same order and are of the same type |
| x != y | Inequality | True if x is not equal to y |
| x <> y | Inequality | True if x is not equal to y |
| x !== y | Non-identity | True if x is not identical to y |
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