PHP · Theory

with MySQL

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Theory

322/352

with MySQL

If you can teach with MySQL using fetch marks by roll, you know it. If you only know the heading, you don’t.

For with MySQL, a .php page is in play. Don’t blame it until you have traced fetch marks by roll.

with MySQL exists so Asha can keep fetch marks by roll correct in the college DB.

Asha ships with MySQL in the college DB. That is the use case worth saying.

Don’t do this with with MySQL — string-concat SQL. Interviewers spot it in ten seconds.

After with MySQL, Asha should still remember string-concat SQL.

Close with MySQL with — “If I skip it, fetch marks by roll goes wrong like this: string-concat SQL.”

Exam tip

Board: fetch marks by roll. Dry-run with MySQL. Name the trap: string-concat SQL.

Example

<?php
// with MySQL
$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";
}

with MySQL: scores array, print avg, then high marks. Say the output.

Short notes

Defwith MySQL — Asha uses it for fetch marks by roll in the college DB.
Rulewith MySQL → prepared statement.
Rememberwith MySQL + a .php page (the college DB).
Usewith MySQL in the college DB (fetch marks by roll).
Trapwith MySQL — string-concat SQL.
Exwith MySQL → fetch marks by roll.

PHP · Theory

with MySQL

← All stacks

Theory

322/352

with MySQL

If you can teach with MySQL using fetch marks by roll, you know it. If you only know the heading, you don’t.

For with MySQL, a .php page is in play. Don’t blame it until you have traced fetch marks by roll.

with MySQL exists so Asha can keep fetch marks by roll correct in the college DB.

Asha ships with MySQL in the college DB. That is the use case worth saying.

Don’t do this with with MySQL — string-concat SQL. Interviewers spot it in ten seconds.

After with MySQL, Asha should still remember string-concat SQL.

Close with MySQL with — “If I skip it, fetch marks by roll goes wrong like this: string-concat SQL.”

Exam tip

Board: fetch marks by roll. Dry-run with MySQL. Name the trap: string-concat SQL.

Example

<?php
// with MySQL
$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";
}

with MySQL: scores array, print avg, then high marks. Say the output.

Short notes

Defwith MySQL — Asha uses it for fetch marks by roll in the college DB.
Rulewith MySQL → prepared statement.
Rememberwith MySQL + a .php page (the college DB).
Usewith MySQL in the college DB (fetch marks by roll).
Trapwith MySQL — string-concat SQL.
Exwith MySQL → fetch marks by roll.

with MySQL

Example

Short notes

Questions

with MySQL

Example

Short notes

Questions