Deprecated: Implicit conversion from float 2.5 to int loses precision
PHP 8.1+ warns when a float with a fractional part is silently converted to int (array keys, % operator, int parameters).
Exact message you may see
Implicit conversion from floatloses precision
Seen on:
PHP
Meaning
Using floats as array keys or with modulo truncates them. PHP 8.1 makes the precision loss visible.
Common causes
- Float used as an array key
- Modulo with float operands
- Float passed to an int parameter
⚡ Quick fix
- Round explicitly:
(int) round($x)orintdiv() - Use fmod() for float modulo
Detailed fix by platform
PHP
$page = (int) floor($offset / $perPage);
How to diagnose
- Expression — Which conversion?
- Intent — Truncate, round or keep decimals?
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Last updated 14 Oct 2026