PHP
Version
Running on Php v8.1.27
Supported languages
PHP
Testing framework
Special reminders and implementation details
php
use PHPUnit\Framework\TestCase;
/**
* @testdox HelloWorld.php
*/
class HelloWorldTest extends TestCase {
/**
* @testdox Should display "Hello World!"
*/
public function testHelloWorld() {
$output = helloWorld();
$this->assertEquals('Hello World!', $output);
}
}
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Included libraries
How to debug
Debugging PHP code is essential for every developer. One of the simplest yet effective ways to debug is by using echo
or var_dump
statements.
Steps to Debug Using Echo or Var_dump
Identify the Problem Area: Locate the section of your code where you suspect the problem might be.
Insert
echo
orvar_dump
Statements: Addecho
orvar_dump
statements before and after the suspected problematic code to print out variable values and flow control.Check the Results Output of your tests
Analyze the Output: Look at the values printed on the results console area to understand what's going wrong in your code. Adjust your code based on the findings and repeat as necessary.
Here’s an example of how to use echo
or var_dump
for debugging:
php
function calculate_sum($a, $b) {
echo "calculate_sum called with arguments: $a, $b <br>"; // Log function call
$sum = $a + $b;
echo "Sum after addition: $sum <br>"; // Log sum calculation
return $sum;
}
$result = calculate_sum(5, 10);
echo "Result of calculate_sum: $result"; // Log the result
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