Best answer: How get data from while loop in PHP?

How fetch data from database while loop in PHP?

Returns an array that corresponds to the fetched row and moves the internal data pointer ahead. In the while($row = mysql_fetch_array($result)) version instead, the while ‘s conditional expression will be executed at every loop, therefore moving the mysql internal results pointer forward (reading the next result).

How do you do a while loop in PHP?

The while loop executes a block of code repeatedly until the condition is FALSE. Once the condition gets FALSE, it exits from the body of loop. It should be used if the number of iterations is not known.

Alternative Example

  1. <? php.
  2. $n=1;
  3. while($n<=10):
  4. echo “$n<br/>”;
  5. $n++;
  6. endwhile;
  7. ?>

Do While loop is an control loop in PHP?

The PHP do-while loop is guaranteed to run at least once. The PHP do-while loop is used to execute a set of code of the program several times.

Difference between while and do-while loop.

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while Loop do-while loop
This loop does not use a semicolon to terminate the loop. Do-while loop use semicolon to terminate the loop.

Do While and while loop are same true ya false?

do-while ¶

do-while loops are very similar to while loops, except the truth expression is checked at the end of each iteration instead of in the beginning.

How can we fetch data from database without using while loop in PHP?

You can use mysql_result: $sql = ‘SELECT * FROM posts WHERE id=$post_id’; $query = mysql_query($sql); echo mysql_result($query, 0, ‘title’); This will echo the field title for the first(0) row. Then, you can call mysql_fetch_array once and that’s it.

What is while loop example?

A “While” Loop is used to repeat a specific block of code an unknown number of times, until a condition is met. For example, if we want to ask a user for a number between 1 and 10, we don’t know how many times the user may enter a larger number, so we keep asking “while the number is not between 1 and 10”.

What is difference between while loop and do while loop?

Here, the main difference between a while loop and do while loop is that while loop check condition before iteration of the loop. On the other hand, the do-while loop verifies the condition after the execution of the statements inside the loop. … Conversely, the do while loop is called the exit controlled loop.

How do I stop a while loop in PHP?

The keyword break ends execution of the current for, foreach, while, do while or switch structure. When the keyword break executed inside a loop the control automatically passes to the first statement outside the loop.

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What is for each loop in PHP?

The foreach loop is mainly used for looping through the values of an array. It loops over the array, and each value for the current array element is assigned to $value, and the array pointer is advanced by one to go the next element in the array. Syntax: … php foreach (array as $value){ //code to be executed; } ?>

What types of loops exist in PHP?

PHP supports four types of looping techniques;

  • for loop.
  • while loop.
  • do-while loop.
  • foreach loop.

Do While loop is an loop?

In most computer programming languages, a do while loop is a control flow statement that executes a block of code at least once, and then either repeatedly executes the block, or stops executing it, depending on a given boolean condition at the end of the block.

Which is true of do loop?

The do while loop checks the condition at the end of the loop. This means that the statements inside the loop body will be executed at least once even if the condition is never true. The do while loop is an exit controlled loop, where even if the test condition is false, the loop body will be executed at least once.

How does while loop work?

How while Loop works? In while loop, condition is evaluated first and if it returns true then the statements inside while loop execute, this happens repeatedly until the condition returns false. When condition returns false, the control comes out of loop and jumps to the next statement in the program after while loop.

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Which loop will always run at least one loop?

The body of a do loop is always executed at least once. Almost always there are situations where a loop body should not execute, not even once. What is the Do While loop syntax? Syntax.

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