PHP 5 Array search
Array search
In this section, we will learn how search an array element with the help of pre-defined function and without pre-defined function.
Array_search function
array_search function return the index of the element of the found element, otherwise return false.
Example array_search
<?php
$z=array
(
"Apple",
"Banana",
"Orange",
"Grapes"
);
echo array_search("Banana",$z);
?>
$z is an array variable that holds four elements and pass the string you want search into the array_search as the first argument, it will be given the index number of the element.
Note: Banana and banana are different strings.
Output
Search associative array
<?php
$z=array
(
"h"=>"Apple",
"i"=>"Banana",
"j"=>"Orange",
"k"=>"Grapes"
);
$x=array_search("Orange",$z);
echo "Searched element found at :".$x;
?>
Output
Search array element without function
You can search array element without using any pre-defined function. Let us see the following example.
Search array element
<?php
$y=array(12,10,5,15,20);
$x=0;
for($i=0;$i<count($y);$i++)
{
if($y[$i]==5)
{
$x=$i;
break;
}
}
if($x>=0)
{
echo "Found at ";
echo $x+1 ." place";
}
else
{
echo "Not found";
}
?>
$y is a simple array variable that hold some element, you can search an element with the help of if-else statement, as shown above.
Output
Search Associative array element
<?php
$z=array("h"=>"Apple","i"=>"Banana","j"=>"Orange","k"=>"Grapes");
$x=0;
foreach($z as $key=>$value)
{
if($z[$key]=="Banana")
{
$x=$key;
break;
}
}
if($x>=0)
{
echo "Found at ";
echo $key ." th place";
}
else
{
echo "not found";
}
?>
All the thing will be same as the indexed array except foreach loop at the place of for loop.
