PHP Decode

--TEST--
Test for pre-defined math constants
--INI--
precision=14
--FILE--
<?php
echo "M_E= ";
var_dump(M_E);
echo "M_LOG2E= ";
var_dump(M_LOG2E);
echo "M_LOG10E= ";
var_dump(M_LOG10E);
echo "M_LN2= ";
var_dump(M_LN2);
echo "M_LN10= ";
var_dump(M_LN10);
echo "M_PI= ";
var_dump(M_PI);
echo "M_PI_2= ";
var_dump(M_PI_2);
echo "M_PI_4= ";
var_dump(M_PI_4);
echo "M_1_PI= ";
var_dump(M_1_PI);
echo "M_2_PI= ";
var_dump(M_2_PI);
echo "M_SQRTPI= ";
var_dump(M_SQRTPI);
echo "M_2_SQRTPI= ";
var_dump(M_2_SQRTPI);
echo "M_LNPI= ";
var_dump(M_LNPI);
echo "M_EULER= ";
var_dump(M_EULER);
echo "M_SQRT2= ";
var_dump(M_SQRT2);
echo "M_SQRT1_2= ";
var_dump(M_SQRT1_2);
echo "M_SQRT3= ";
var_dump(M_SQRT3);
echo "INF= ";
var_dump(INF);
echo "NAN= ";
var_dump(NAN);
?>
--EXPECT--
M_E= float(2.718281828459045)
M_LOG2E= float(1.4426950408889634)
M_LOG10E= float(0.4342944819032518)
M_LN2= float(0.6931471805599453)
M_LN10= float(2.302585092994046)
M_PI= float(3.141592653589793)
M_PI_2= float(1.5707963267948966)
M_PI_4= float(0.7853981633974483)
M_1_PI= float(0.3183098861837907)
M_2_PI= float(0.6366197723675814)
M_SQRTPI= float(1.772453850905516)
M_2_SQRTPI= float(1.1283791670955126)
M_LNPI= float(1.1447298858494002)
M_EULER= float(0.5772156649015329)
M_SQRT2= float(1.4142135623730951)
M_SQRT1_2= float(0.7071067811865476)
M_SQRT3= float(1.7320508075688772)
INF= float(INF)
NAN= float(NAN)