PHP -

Go vs PHP Syntax Comparison

Posted on October 9, 2021 |

Data types PHP types: bool string int //Integer float array object NULL resource Go types: string bool int int8 int16 int32 int64 uint uint8 uint16 uint32 uint64 uintptr byte //uint8 rune //int32 float32 float64 complex64 complex128 array slices map struct Variables Variable declarations Go PHP var i int $i = 0 // integer var f float64 $f = 0.0 // float var b bool $b = false // boolean var s string $s = "" // string var a [2]string $a = [] // array Short variable declarations [Read More]

PHP 不用函数翻转字符串

Posted on October 9, 2021 |

$str = 'hello';

$newstr = '';

$i = 0;

while (!empty($str[$i])) {
	$newstr = $str[$i].$newstr;

	$i++;
}

echo $newstr;

programming PHP

How to Avoid Floating Point Math Error in PHP and Python

Posted on October 7, 2021 |

php -r "var_dump(intval(0.58 * 100));”

int(57)

python3

>>>print(0.58*100)57.99999999999999

other languages http://0.30000000000000004.com

how did this happen http://www.laruence.com/2013/03/26/2884.html

Mathematical extensions in php and decimal module in python to avoid this

php -r "var_dump(intval(bcmul('0.58', '100')));"

int(58)

>>> from decimal import Decimal

>>> from decimal import getcontext

>>> print(Decimal('0.58') * Decimal('100'))

58.00

programming PHP Python