PHP · Theory

Error Handling

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Theory

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Error Handling

Error Handling is simple if you keep it on paper. Ananya uses it for divide total / count in a report script.

Error Handling on the board — try/catch + log. Then say what divide total / count looks like after.

Skip Error Handling and empty catch shows up in a report script.

Error Handling shows up in a report script. Name divide total / count, not “a real-world scenario”.

If divide total / count breaks under Error Handling, check empty catch first.

Error Handling is not a lonely heading. Ananya ties it to divide total / count.

Viva for Error Handling — what it is → try/catch + log → the mistake (empty catch).

Exam tip

Say Error Handling in one breath, then try/catch + log, then empty catch.

Example

<?php
// Error Handling
$scores = [80, 90, 70];
$avg = array_sum($scores) / count($scores);
echo "avg=" . number_format($avg, 1) . "\n";
foreach ($scores as $s) {
  if ($s >= 80) echo "high: $s\n";
}

Error Handling: scores array, print avg, then high marks. Say the output.

Short notes

DefError Handling — Ananya uses it for divide total / count in a report script.
RuleError Handling → try/catch + log.
RememberError Handling + the PHP runtime (a report script).
UseError Handling in a report script (divide total / count).
TrapError Handling — empty catch.
ExError Handling → divide total / count.

PHP · Theory

Error Handling

← All stacks

Theory

329/352

Error Handling

Error Handling is simple if you keep it on paper. Ananya uses it for divide total / count in a report script.

Error Handling on the board — try/catch + log. Then say what divide total / count looks like after.

Skip Error Handling and empty catch shows up in a report script.

Error Handling shows up in a report script. Name divide total / count, not “a real-world scenario”.

If divide total / count breaks under Error Handling, check empty catch first.

Error Handling is not a lonely heading. Ananya ties it to divide total / count.

Viva for Error Handling — what it is → try/catch + log → the mistake (empty catch).

Exam tip

Say Error Handling in one breath, then try/catch + log, then empty catch.

Example

<?php
// Error Handling
$scores = [80, 90, 70];
$avg = array_sum($scores) / count($scores);
echo "avg=" . number_format($avg, 1) . "\n";
foreach ($scores as $s) {
  if ($s >= 80) echo "high: $s\n";
}

Error Handling: scores array, print avg, then high marks. Say the output.

Short notes

DefError Handling — Ananya uses it for divide total / count in a report script.
RuleError Handling → try/catch + log.
RememberError Handling + the PHP runtime (a report script).
UseError Handling in a report script (divide total / count).
TrapError Handling — empty catch.
ExError Handling → divide total / count.

Error Handling

Example

Short notes

Questions

Error Handling

Example

Short notes

Questions