Online PHP editor | rfc for B60Lu

@ 2026-03-04T09:53:52Z

<?php

// Basic case from the bug report
echo "-- Basic case --\n";
var_dump(sprintf('%.2f', -0.001));
var_dump(sprintf('%.2f', -0.0));

// Various precisions where the value rounds to zero
echo "-- Precisions rounding to zero --\n";
var_dump(sprintf('%.0f', -0.1));
var_dump(sprintf('%.0f', -0.0));
var_dump(sprintf('%.1f', -0.04));
var_dump(sprintf('%.1f', -0.001));
var_dump(sprintf('%.2f', -0.004));
var_dump(sprintf('%.2f', -0.001));
var_dump(sprintf('%.3f', -0.0004));
var_dump(sprintf('%.3f', -0.0001));
var_dump(sprintf('%.4f', -0.00004));
var_dump(sprintf('%.4f', -0.00001));

// Values that should remain negative (do NOT round to zero)
echo "-- Should stay negative --\n";
var_dump(sprintf('%.2f', -0.01));
var_dump(sprintf('%.2f', -0.1));
var_dump(sprintf('%.2f', -1.5));
var_dump(sprintf('%.1f', -0.1));
var_dump(sprintf('%.0f', -1.0));

// Uppercase F format
echo "-- Uppercase F --\n";
var_dump(sprintf('%.2F', -0.001));
var_dump(sprintf('%.2F', -0.01));

// Explicit positive sign should show + when value rounds to zero
echo "-- Explicit sign --\n";
var_dump(sprintf('%+.2f', -0.001));
var_dump(sprintf('%+.2f', 0.001));
var_dump(sprintf('%+.2f', -0.01));

// printf output (not just sprintf)
echo "-- printf --\n";
printf('%.2f', -0.001);
echo "\n";
printf('%.2f', -0.01);
echo "\n";

// Consistency with number_format
echo "-- number_format consistency --\n";
var_dump(number_format(-0.001, 2));
var_dump(number_format(-0.01, 2));

// Very small negative values that round to zero
echo "-- Very small negatives --\n";
var_dump(sprintf('%.2f', -1e-10));
var_dump(sprintf('%.2f', -PHP_FLOAT_EPSILON));
var_dump(sprintf('%.2f', -1e-100));

// Padding and width
echo "-- Padding --\n";
var_dump(sprintf('%08.2f', -0.001));
var_dump(sprintf('%08.2f', -0.01));

Output for git.master_jit, git.master, rfc.property-hooks: -- Basic case -- string(5) "-0.00" string(4) "0.00" -- Precisions rounding to zero -- string(2) "-0" string(1) "0" string(4) "-0.0" string(4) "-0.0" string(5) "-0.00" string(5) "-0.00" string(6) "-0.000" string(6) "-0.000" string(7) "-0.0000" string(7) "-0.0000" -- Should stay negative -- string(5) "-0.01" string(5) "-0.10" string(5) "-1.50" string(4) "-0.1" string(2) "-1" -- Uppercase F -- string(5) "-0.00" string(5) "-0.01" -- Explicit sign -- string(5) "-0.00" string(5) "+0.00" string(5) "-0.01" -- printf -- -0.00 -0.01 -- number_format consistency -- string(4) "0.00" string(5) "-0.01" -- Very small negatives -- string(5) "-0.00" string(5) "-0.00" string(5) "-0.00" -- Padding -- string(8) "-0000.00" string(8) "-0000.01"

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2022-12-01 RFC: Property hooks - included in PHP 8.4
2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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