Explode to array and print each element as list item

问题

I have a set of numbers in a table field in database, the numbers are separated by comma ','. I am trying to do the following:

Step 1. : SELECT set of numbers from database and explode it to array :

$array =  explode(',', $set_of_numbers);

Step 2. : Print each element of the array as list item by using foreach loop :

foreach ($array as $list_item => $set_of_numbers){
    echo "<li>";
    print_r(array_list_items($set_of_numbers));
    echo "</li>";}

Please anybody tell me what is wrong. Thank you.

回答1:

$numbers = '1,2,3';

$array =  explode(',', $numbers);

foreach ($array as $item) {
    echo "<li>$item</li>";
}

回答2:

Assuming your original $set_of_numbers is simply a CSV string, something like 1,2,3,4,..., then your foreach is "mostly" ok. But your variable naming is quite bonkers, and your print-r() call uncesary:

$array = explode(',', $set_of_numbers);
foreach($array as $key => $value) {
   echo "<li>$key: $value</li>";
}

Assuming that 1,2,3,4... string, you'd get

<li>0: 1</li>
<li>1: 2</li>
<li>2: 3</li>
etc...

回答3:

$numbers = "1,2,3";

$array =  explode(",", $numbers);

/* count length of array */
$arrlength = count($array);

/* using for while */
$x = 0; 

while ($x < $arrlength) {

  echo "<li>$array[$x]</li>" . PHP_EOL;
  $x++;

}
echo PHP_EOL;

/* using for classic */
for ($x = 0; $x < $arrlength; $x++) {

  echo "<li>$array[$x]</li>" .  PHP_EOL;

}
echo PHP_EOL;    

/* using for each assoc */
foreach ($array as $value) {

  echo "<li>$value</li>" .  PHP_EOL;

}
echo PHP_EOL;    

/* using for each assoc key */
foreach ($array as $key => $value) {

  echo "<li>$key => $value</li>" .  PHP_EOL;

}

body, html, iframe { 
  width: 100% ;
  height: 100% ;
  overflow: hidden ;
}

<iframe src="https://ideone.com/ZqT4Yi" ></iframe>

回答4:

Here is answer for your question to get ride of your problem

$Num = '1,2,3,4,5,';
$Array = explode(',',$Num);
foreach ($Array as $Items)
{
echo "<li>&Items</li>"; // This line put put put in the list.
}

回答5:

This can easily be achieved by the following code snippet:

<?php
$my_numbers = '1,12,3.2,853.3,4545,221';
echo '<ul>';
foreach(explode(',', $my_numbers) AS $my_number){
    echo '<li>'.$my_number.'</li>';
}
echo '</ul>';

The above code will output the following HTML:

<ul><li>1</li><li>12</li><li>3.2</li><li>853.3</li><li>4545</li><li>221</li></ul>

Credits: http://dwellupper.io/post/49/understanding-php-explode-function-with-examples

来源：https://stackoverflow.com/questions/16257063/explode-to-array-and-print-each-element-as-list-item

标签

php

foreach

explode