print_r

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Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Prints human-readable information about a variable
<?php print_r(mixed $value, bool $return = false): string|bool
<?php     public function test_invoice_validation()

    {

        $invoice = Invoice::factory()->make();

        $this->assertEmpty($invoice->validate(), "Validation failed: ".print_r($invoice->validate(), true));

    }



    public function test_invoice_special_characters()
tests/InvoiceTest.php