Check out this cool little snippet for use in CLI scripts. It shows processing
with a spinner. It took me a little while to figure out the magic combination
of the cursor array and ternary operator. My main goal was to make it as self
contained and efficient as possible. I am importing millions of records, and
didn't want to waste CPU time on computing modulus on some huge $i value. :)
--------------------- 8< SNIP >8 ----------------------------------------------
#!/usr/bin/php -q
<?php
define('ESC', 27);
printf( "%c[2J", ESC ); //clear screen
//note how the '-' is at [1], not [0]
$cursorArray = array('/','-','\\','|','/','-','\\','|');
echo "Processing: ";
printf( "%c7", ESC ); //save cursor position
for ($count = 1; $count <= 30; $count++)
{
//note that $i is all self contained.
printf("%c8(".$cursorArray[ (($i++ > 7) ? ($i = 1) : ($i % 8)) ].")
%02d", ESC, $count); //restore cursor position and print
sleep(1);
}
echo "\nDone.\n";
?>
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