Pausing PHP process via command line - php

Question

I am running this via the command line. When the loop is running, is there any way I can pause the execution of the code? Ideal case would be that I could press a key to pause and then another key to resume. If I don't press the pause key then the loop continues until $i == 1000
<?php
echo "How long should the code sleep between increments?\n";
echo ">> ";
$sleep = trim(fgets(STDIN));
for ($i = 1; $i <= 1000; $i++) {
echo "$i\n";
sleep($sleep);
}
This is a heavily simplified example of my actual need for the code.

Answer 1

I don't sure my code is best solution or not but it work.
function checkResume()
{
$r = false;
while (!$r) {
if (fgets(STDIN) == "r") {
$r = true;
}
}
}
function checkPause()
{
$input = fgets(STDIN);
if (!empty($input) && $input == "p") {
return true;
}
return false;
}
echo "How long should the code sleep between increments?\n";
echo ">> ";
$sleep = trim(fgets(STDIN));
echo "\nStart ...\n";
stream_set_blocking(STDIN, false);
for ($i = 1; $i <= 1000; $i++) {
if (checkPause()) {
echo "wait for resume \n";
checkResume();
}
echo "$i\n";
sleep($sleep);
}
Hope this help.