Thewhileloop syntax can also be written with theendwhilestatement like this Example Print$ias long as$iis less than 6: $i=1;while($i<6):echo$i;$i++;endwhile; Try it Yourself » Step 10 If you want thewhileloop
在PHP中,可以使用while循环来重复执行一段代码,直到指定的条件不再满足为止。while循环的条件设置在while关键字后的括号内。条件通常是一个布尔表达式,如果这个表达式的值为真,循环会继续执行;如果为假,循环会停止执行。例如: $count = 0; while ($count < 5) { echo "The count is: " . $count . ""; ...
在PHP中,do-while循环和while循环都是用于重复执行代码块的循环结构。它们之间的主要区别在于循环执行的时机。 do-while循环会先执行一次代码块,然后在检查条件是否满足之前继续执行循环。换句话说,do-while循环保证至少会执行一次代码块。 而while循环在每次循环开始之前都会先检查条件是否满足,如果条件不满足,则循环体...
Syntax while(condition) { // code block to be executed } In the example below, the code in the loop will run, over and over again, as long as a variable (i) is less than 5: Example inti =0; while(i <5) { cout << i <<"\n"; ...
问PHP mysqli do while loop -显示具有一条或多条关联记录的目录EN函数源码： /** byte字节单位转换...
Like with the if statement, you can group multiple statements within the same while loop by surrounding a group of statements with curly braces, or by using the alternate syntax: while (expr): statement ... endwhile; The following examples are identical, and both print the numbers 1 ...
for loop while loop do...while loop In the previous tutorial, we learned about for loop. In this tutorial, we will learn about while and do..while loop. while loop The syntax of the while loop is: while (testExpression) { // the body of the loop } How while loop works? The whil...
Loops are used to repeatedly execute a block of program statements. The basic loop structure in Python is while loop. Here is the syntax. Syntax: while (expression) : statement_1 statement_2 ... The while loop runs as long as the expression (condition) evaluates to True and execute the...
Introduction to PL/pgSQL while loop statement The while loop statement executes one or more statements as long as a specified condition is true. Here’s the basic syntax of a while loop statement: [ <> ] while condition loop statements; end loop; In this syntax, PostgreSQL evaluates ...
In the above example, we have used awhileloop to print the numbers from1to3. The loop runs as long as the conditionnumber <= 3isTrue. while Loop Syntax whilecondition:# body of while loop Here, Thewhileloop evaluatescondition, which is a boolean expression. ...