PHP · Theory

stristr()

Theory

248/352

stristr()

stristr() is a PHP topic. In plain words you use it for a short stristr example in a college portal page. Don’t start with a slogan — start with that picture.

Smallest example: the smallest stristr example you can type. Type it, run it, and say what you see. If you can do that from memory, you know stristr().

From the example next to this theory — stristr(): scores array, print avg, then high marks.

Trap — only saying “stristr” with no example. Fix that before you talk about advanced PHP.

Viva — what is stristr()? Then show the smallest stristr example you can type. Then name the trap.

Exam tip

What is stristr()? Show this: the smallest stristr example you can type. Trap: only saying “stristr” with no example.

Example

<?php
// stristr()
$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";
}

stristr(): scores array, print avg, then high marks. Say the output.

Short notes

Defstristr() — a short stristr example in a college portal page.
Rulethe smallest stristr example you can type
Traponly saying “stristr” with no example
Usea college portal page

PHP · Theory

stristr()

← All stacks

Theory

248/352

stristr()

stristr() is a PHP topic. In plain words you use it for a short stristr example in a college portal page. Don’t start with a slogan — start with that picture.

Smallest example: the smallest stristr example you can type. Type it, run it, and say what you see. If you can do that from memory, you know stristr().

From the example next to this theory — stristr(): scores array, print avg, then high marks.

Trap — only saying “stristr” with no example. Fix that before you talk about advanced PHP.

Viva — what is stristr()? Then show the smallest stristr example you can type. Then name the trap.

Exam tip

What is stristr()? Show this: the smallest stristr example you can type. Trap: only saying “stristr” with no example.

Example

<?php
// stristr()
$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";
}

stristr(): scores array, print avg, then high marks. Say the output.

Short notes

Defstristr() — a short stristr example in a college portal page.
Rulethe smallest stristr example you can type
Traponly saying “stristr” with no example
Usea college portal page

stristr()

Example

Short notes

Questions

stristr()

Example

Short notes

Questions