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Print all the values of array

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Содержание
  1. Как вывести PHP массив
  2. Функция print_r()
  3. Результат:
  4. Функция var_dump()
  5. Результат:
  6. var_export()
  7. Результат:
  8. Цикл foreach
  9. Результат:
  10. Результат:
  11. Результат:
  12. Цикл for
  13. Результат:
  14. Цикл while
  15. Результат:
  16. Функция implode()
  17. Результат:
  18. Print all array values in php
  19. How to print or echo all the values of an array in PHP?
  20. Example: Using foreach loop
  21. Output
  22. Using print_r() function
  23. Example: Using print_r() function
  24. Output
  25. Using var_dump() function
  26. Example: Using var_dump() function
  27. Output
  28. Conclusion

Как вывести PHP массив

Примеры использования PHP функций и циклов для вывода всех элементов массива в окно браузера.

Функция print_r()

Функция print_r() выводит информацию о переменной в удобочитаемом виде. Чтобы отобразить пробелы и переносы результат функции нужно обернуть в тег .

$array = array( 'Andi', 'Benny', 'Cara', 'Danny', 'Emily', ); echo '
'; print_r($array); echo '
 
'; 
 
Результат:
 
Array ( [0] => Andi [1] => Benny [2] => Cara [3] => Danny [4] => Emily )
 
 Функция var_dump() 
 
Функция var_dump() отображает информацию о переменной, включая тип и значение.
 
$array = array( 'Andi', 'Benny', 'Cara', 'Danny', 'Emily', ); echo '
'; var_dump($array); echo '
 
'; 
 
Результат:
 
array(5) < [0]=>string(4) "Andi" [1]=> string(5) "Benny" [2]=> string(4) "Cara" [3]=> string(5) "Danny" [4]=> string(5) "Emily" >
 
 var_export() 
 
Функция var_export() возвращает строковое представление переменной в виде полноценного PHP-кода.
 
$array = array( 'Andi', 'Benny', 'Cara', 'Danny', 'Emily', ); echo '
'; echo var_export($array); echo '
 
';
 
Результат:
 
array ( 0 => 'Andi', 1 => 'Benny', 2 => 'Cara', 3 => 'Danny', 4 => 'Emily', )
 
 Цикл foreach 
 
Цикл foreach специально создан для поэлементного перебора массивов.
 
$array = array( 'Andi', 'Benny', 'Cara', 'Danny', 'Emily', ); foreach ($array as $row) < echo $row . "
\r\n"; >
 
Результат:
 
Andi 
Benny 
Cara 
Danny 
Emily
 
Пример с выводом нумерованного списка с использованием индексов массива:
 
$array = array( 'Andi', 'Benny', 'Cara', 'Danny', 'Emily', ); foreach ($array as $n => $row) < echo ($n + 1) . '.' . $row . "
\r\n"; >
 
Результат:
 
1.Andi 
2.Benny 
3.Cara 
4.Danny 
5.Emily
 
Чтобы не выводить последний 
, добавим условие:
 
$array = array( 'Andi', 'Benny', 'Cara', 'Danny', 'Emily', ); foreach ($array as $n => $row) < echo ($n + 1) . '.' . $row; if ($n < count($array) - 1) < echo "
\r\n"; > >
 
Результат:
 
1.Andi 
2.Benny 
3.Cara 
4.Danny 
5.Emily
 
 Цикл for 
 
Цикл for подойдет только в случаях, когда индексы массива имеют непрерывную нумерацию.
 
$array = array( 'Andi', 'Benny', 'Cara', 'Danny', 'Emily', ); for ($n = 0; $n < count($array); $n++) < echo $n + 1 . '.' . $array[$n] . "
\r\n"; >
 
Результат:
 
1.Andi 
2.Benny 
3.Cara 
4.Danny 
5.Emily
 
 Цикл while 
 
Цикл while такое же работает как и for .
 
$array = array( 'Andi', 'Benny', 'Cara', 'Danny', 'Emily', ); $index = 0; while ($index < count($array)) < echo $index + 1 . '.' . $array[$index] . "
\r\n"; $index++; >
 
Результат:
 
1.Andi 
2.Benny 
3.Cara 
4.Danny 
5.Emily
 
 Функция implode() 
 
Также, для вывода массива удобно использовать функцию implode() , которая объединяет элементы массива через разделитель.
 
$array = array( 'Andi', 'Benny', 'Cara', 'Danny', 'Emily', ); echo implode("
\r\n", $array);
 
Результат:
 
Andi 
Benny 
Cara 
Danny 
Emily
 
Источник
  
     
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Источник
 
How to print or echo all the values of an array in PHP?
 
We can print all the values of the array using a PHP foreach loop. The foreach loop iterates through each element within the array.
 
The foreach loop works on an array and objects only. We will get an error if we try to use the foreach loop with variables or other data types.
 
It is the easiest method to print all the array elements at once.
 
Example: Using foreach loop
 
In the given example, we have used the foreach loop to print all the elements of an array.
 
     "; foreach($fruits as $fruits)< echo $fruits . "
"; > ?>  
 
Output
 
The array is: 
Apple 
Mango 
Banana 
Pears 
Watermelon 
Guava
 
Using print_r() function
 
We can also print all the values of the array using the print_r() function. This function is basically used to print the values in more human-readable form.
 
The print_r() function takes two arguments, the first parameter is the variable name whose value we want to print using this function. The second parameter is the return type which is optional and by default its value is false.
 
This function prints all the values of the array along with their index value.
 
Example: Using print_r() function
 
In the given example, we have used the print_r() function to print all the values of the array.
 
     
 
Output
 
Array ( [0] => Apple [1] => Mango [2] => Banana [3] => Pears [4] => Watermelon [5] => Guava )
 
Using var_dump() function
 
The var_dump() function is used to print all the values of the array at once. The function prints the value of the array along with its index value, data type, and length.
 
This function takes the single parameter which can be the name of the variable whose value we want to print.
 
Example: Using var_dump() function
 
In this example, we have used the var_dump() function to print all the values of an array. This method also prints the length, index value, and the datatype of the value.
 
     
 
Output
 
array(6) < [0]=>string(5) «Apple» [1]=> string(5) «Mango» [2]=> string(6) «Banana» [3]=> string(5) «Pears» [4]=> string(10) «Watermelon» [5]=> string(5) «Guava» >
 
Conclusion
 
In this lesson, we have learned how to print all the values of an array in PHP. There are several methods and pre-defined functions that enable us to print all the values of the array at once. Here, we have discussed three methods with the help of them we can print all the values of an array, these methods are:
 
Источник
 
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