This is a short snippet that explains how to check whether a number is odd or even in PHP. Check out the handy methods and examples of our tutorial.
if (isEven($number2)) { echo $number2 . “是双数。”;} else { echo $number2 . “是单数。”;}“` 上述代码定义了一个名为isEven的函数,它接受一个参数number。函数内部首先通过取余运算符判断number除以2的余数,如果余数为0则返回true,否则返回false。 然后通过调用isEven函数可以判断一个数是双数还是...
从PHP中的长字符串中提取特定字符串可以使用多种方法,以下是其中几种常见的方法: 1. 使用字符串函数: - 使用strpos()函数找到特定字符串的起始位置,然后使用substr()函数截取...
Check if number is odd$isNumberOdd = Recipe::isNumberOdd(5); // outputs: boolCheck if number is even$isNumberEven = Recipe::isNumberEven(8); var_dump($isNumberEven); // outputs: boolGet Current URL$currentURL = Recipe::getCurrentURL(); var_dump($currentURL); // outputs: current ...
PHP Exercises, Practice and Solution: Write a PHP program to check if the value of each element is equal or greater than the value of previous element of a given array of integers.
function example(): void { static $count = 0; if ($count >= 3) { $count = 0; return; } $count += 1; echo 'Running for loop number ' . $count . PHP_EOL; example(); } static 关键字还可以用于跟踪可能需要多次函数调用但您可能只想要单个实例的昂贵资源。考虑一个将消息记录到数据库...
Comprehensive, community-driven list of essential PHP interview questions. Whether you're a candidate or interviewer, these interview questions will help prepare you for your next PHP interview ahead of time.
{* check for array. *} {if is_array($foo) } ... {/if} {* check for not null. *} {if isset($foo) } ... {/if} {* test if values are even or odd *} {if $var is even} ... {/if} {if $var is odd} ... {/if} {if $var is not odd} ... {/if} {* test ...
print("-1 evaluates to True in condition checking") ... -1 evaluates to True in condition checking 条件测试中...: 条件周围的()是可选的 缩进代码块可以有任意数目的语句,包括空行 $ ...45 is greater than 25 45 is an odd number 45 is a positive number if-else作为条件操作符 #!...:...
boolis_array(mixedvar) boolin_array(mixedneedle,arrayhaystack [,bool strict] )检查数组中是否存在某个值numberarray_sum(arrayarray)计算数组中所有值的和arrayarray_unique(arrayarray)移除数组中重复的值mixedreset(array&array)将数组的内部指针指向第一个单元mixedcurrent(array&array)mixednext(array&array)mix...