'PHP Multidimensional Array Length

This is a multidimensional PHP array. 

$stdnt = array(
    array("Arafat", 12210261, 2.91),
    array("Rafat", 12210262, 2.92),
    array("Marlin", 12210263, 2.93),
    array("Aziz", 12210264, 2.94),
);

I can find out the length of the array. That means

count($stdnt); // output is 4

[
    array("Arafat", 12210261, 2.91),
    array("Rafat", 12210262, 2.92),
    array("Marlin", 12210263, 2.93),
    array("Aziz", 12210264, 2.94)
] `

But can't get the internal array length.

How can I ?

phparrays


Solution 1:[1]

The other way to count internal array lengths is to iterate through the array using foreach loop.

<?php 
$stdnt = array(
    array("Arafat", 12210261, 2.91),
    array("Rafat", 12210262, 2.92),
    array("Marlin", 12210263, 2.93),
    array("Aziz", 12210264, 2.94),
);

foreach($stdnt as $s)
{
    echo "<br>".count($s);
}
?>

Solution 2:[2]

please use sizeof function or count function with recursive 

 e.g echo (sizeof($stdnt,1) - sizeof($stdnt)) ; // this will output you 9 as you want .

first sizeof($stdntt,1) ; // will output you 13 . count of entire array and 1 mean recursive .

Solution 3:[3]

According to the hint from Meaning of Three dot (…) in PHP, the following code is what I usually use for this case:

$stdnt = array(
    array("Arafat", 12210261, 2.91),
    array("Rafat", 12210262, 2.92),
    array("Marlin", 12210263, 2.93),
    array("Aziz", 12210264, 2.94),
);
echo count(array_merge(...$stdnt));

The Splat operator "..." will only work,

  • Only if the first level keys are in integer, ie, not "strings"
  • PHP > 5.6

Solution 4:[4]

  // You may try as per this sample  

  $cars=array(
    array("volvo",43,56),
    array("bmw",54,678)
  );
  $mySubSize=sizeof($cars);
  for ($i=0;$i<$mySubSize;$i++) {
    foreach ($cars[$i] as $value) {
      echo "$value <br>";
    }
  }

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Suyog
Solution 2
Solution 3 Ninki
Solution 4 Hendi Sama

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