May 26, 2016

Count duplicate element of an array in PHP without using in-built function

By admin Interview Questions, PHP 0 Comments

$arraychars=array("green","red","yellow","green","red","yellow","green");
echo $arrlength=count($arraychars);
$arrCount=array();
for($i=0;$i<$arrlength-1;$i++){
	$key=$arraychars[$i];
	if(@$arrCount[$key]>=1){
		
		$arrCount[$key]++;
	} else{
		$arrCount[$key]=1;
	}
	
	//echo $arraychars[$i];
}
echo "<pre>";
print_r($arrCount);

$arraychars=array("green","red","yellow","green","red","yellow","green");

echo $arrlength=count($arraychars);

$arrCount=array();

for($i=0;$i<$arrlength-1;$i++){

$key=$arraychars[$i];

if(@$arrCount[$key]>=1){

$arrCount[$key]++;

} else{

$arrCount[$key]=1;

}

//echo $arraychars[$i];

}

echo "<pre>";

print_r($arrCount);

OUTPUT:

Array
(
    [green] => 3
    [red] => 2
    [yellow] => 2
)

Array

(

[green] => 3

[red] => 2

[yellow] => 2

)

Tags:array, count values, duplicate values

Count duplicate element of an array in PHP without using in-built function

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