function doubleIt($number) { $number *= 2; echo 'Inside the function, $number is ' . $number . '<br>'; // number is doubled } $number = 4; doubleIt($number); echo 'Outside the function $number is still ' . $num
- PHP_ROUND_UP - Always round up.- PHP_ROUND_DOWN - Always round down.In accounting, it's often necessary to always round up, or down to a precision of thousandths.<?phpfunction round_up($number, $precision = 2){$fig = (int) str_pad('1', $precision, '0'); return (ceil($...
Round the Floating-Point Numbers in PHP Theround()function rounds a floating-point number in PHP. We can use it to define a specific precision value that will round the numbers, keeping the precision value in view. This precision value can be zero or negative. The function has three paramet...
Description The following code shows how to round numbers using the constants. Example //fromwww.java2s.com<?php echo(round(1.5,0,PHP_ROUND_HALF_UP) .""); echo(round(-1.5,0,PHP_ROUND_HALF_UP) .""); echo(round(1.5,0,PHP_ROUND_HALF_DOWN) .""); echo(round(-1.5,0,PHP_ROUND_...
Not checking for numeric values correctly, potentially causing non-numeric values to be added or throwing errors. Follow-Ups: How would you modify the function to return the average of the numbers instead of the sum? How can you ensure the file is properly closed after reading? What the Que...
echo "outside swap function:\n"; echo "\$a is $a \n"; echo "\$b is $b \n"; swap($a, $b); echo "outside swap function:\n"; echo "\$a is $a \n"; echo "\$b is $b \n"; The swap function swaps the numbers between the$aand$bvariables. The original variables are...
= 0.3 due to tiny binary precision errors, often off by a small fraction like 5.5E-17. ThenearlyEqualfunction compares floats within an epsilon (e.g., 1E-10), usingPHP_FLOAT_EPSILONfor near-zero cases, ensuring robust checks. Special values likeNANandINFneed care—NAN != NAN, sois_...
This function formats numbers 'human readable': function byte_format($input, $dec=0) { $prefix_arr = array(" B", "K", "M", "G", "T"); $value = round($input, $dec); $i=0; while ($value>1024) { $value /= 1024;
function sendEmail(string $to, string $subject, string $body) { //... } PHP函数的参数支持定义的时候指定默认值,如果调用方没有传值就使用默认值: function sendEmail($to, $subject = 'test', $body = 'test') { //... } sendEmail('test@test.com') 带返回值的函数定义如下,我们同样可以手动...
Added NumberFormatter::ROUND_HALFODD. Added PROPERTY_IDS_UNARY_OPERATOR, PROPERTY_ID_COMPAT_MATH_START and PROPERTY_ID_COMPAT_MATH_CONTINUE constants. Added IntlDateFormatter::getIanaID/intltz_get_iana_id method/function. Set to C++17 standard for icu 74 and onwards. resourcebundle_get(), Resou...