Why Does '1' Appear at the End of a print_r() Output for Objects in PHP?

Understanding the Mysterious "1" in print_r() Output

When you encounter the seemingly enigmatic "1" at the end of a print_r() statement, don't let it perplex you. This appendage, though not explicitly documented in the PHP manual, has a simple explanation.

The "1" simply indicates that the variable being printed is an object. When dealing with objects, print_r() provides additional information about their properties and methods. In the example provided:

View Object
(
    [viewArray:View:private] => Array
        (
            [title] => Projet JDelage
        )
)
1

The "1" follows the "View Object" line, confirming that you're dealing with an object named "View." The rest of the output displays the object's properties (in this case, "title") and methods (not shown).

It's worth noting that if your print_r() statement includes the echo keyword (e.g., echo print_r($view)), the "1" may appear at the beginning of the output. Remember, echo simply sends the result of the print_r() function to the output buffer, so the "1" still signifies an object being printed.

However, it's generally recommended to avoid parsing the output of print_r(). Instead, consider using dedicated debugging tools or techniques tailored to PHP object inspection.

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