Count how many times something was echoed in a range? - php

Question

I'm just a little stumped, I have a simple range of 1-20 listed out, and displays as follows, showing multiples of 3 within a range, and multiples of 5 within a range. These were displayed with echoes, is there a possible way that I can just count the number of times a specific multiple was displayed/echoed? for instance this is what I have:
1, 2, 3foo, 4, 5bar, 6foo, 7, 8, 9foo, 10bar, 11, 12foo, 13, 14, 15bar, 16, 17, 18foo, 19, 20bar
but I would like it to show a count like
foo: 6 times listed
bar: 4 times listed
Does anyone know of a possible way to use echo substr_count for just words "foo" and "bar" that have been echoed within a range of 1-20?
Let me know if I can clarify. Any guidance would be greatly appreciated!
This is my code:
<?php
foreach (range(1, 20) as $number ) {
echo $number;
echo ' ';
if ($number % 3 == 0 && $number %5 == 0) {
echo "foobar ";
} elseif ($number % 3 == 0) {
echo "foo ";
} elseif ($number % 5 == 0) {
echo "bar ";
}
}
echo "<br>";
ob_start();
// code that prints all the numbers
$output = ob_get_flush();
$foo_count = substr_count($output, "foo");
$bar_count = substr_count($output, "bar");
echo "foo: $foo_count times listed<br>";
echo "bar: $bar_count times listed<br>";
?>

Answer 1

Use the output buffering functions to capture echoed output into a variable.
ob_start();
foreach (range(1, 20) as $number ) {
echo $number;
echo ' ';
if ($number % 3 == 0 && $number %5 == 0) {
echo "foobar ";
} elseif ($number % 3 == 0) {
echo "foo ";
} elseif ($number % 5 == 0) {
echo "bar ";
}
}
$output = ob_get_flush();
$foo_count = substr_count($output, "foo");
$bar_count = substr_count($output, "bar");
echo "foo: $foo_count times listed<br>";
echo "bar: $bar_count times listed<br>";
But doing it this way is silly, you can just increment the counters in the loop:
$foo_count = $bar_count = 0;
foreach (range(1, 20) as $number ) {
echo $number;
echo ' ';
if ($number % 3 == 0 && $number %5 == 0) {
echo "foobar ";
$foo_count++;
$bar_count++;
} elseif ($number % 3 == 0) {
echo "foo ";
$foo_count++;
} elseif ($number % 5 == 0) {
echo "bar ";
$bar_count++;
}
}
DEMO