How to Handle InvalidArgument Exception in PHP

The PHP InvalidArgumentException is an error triggered when a function receives an inappropriate argument, either due to an unexpected data type or invalid data value. This exception commonly occurs when the strict_types flag is enabled and the data type is incorrect, or when the argument's data type is correct but the value itself is invalid. An example is provided where the multiply() function throws an InvalidArgumentException if non-numeric arguments are passed. To handle such exceptions, developers can inspect the stack trace to identify and correct the problematic code lines, and use try-catch blocks to manage these errors gracefully by, for instance, requesting user input again. Tools like Rollbar can assist in tracking, analyzing, and managing these errors in real-time, thereby easing the process of deploying production code.

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