I want to drop off decimals without rounding up. For example if I have 1.505, I want to drop last decimal and value should be 1.50. Is there such a function in PHP?
You need floor() in this way:
$rounded = floor($float*100)/100;
Or you cast to integer:
$rounded = 0.01 * (int)($float*100);
This way it will not be rounding up.