list() in php

list() function is used to assign values to a list of variable in one operation

syntax
list(var1,var2,...)

<?php $sum=array("india","pak"); list($a,$b)=$sum; echo "we are ,a $a,amd $b"; ?>

Output

we are a india and pak

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ksort() in php

ksort() function sorts an array by the keys.The values keep their original keys

syntax
ksort(array,sorttype)

<?php $sum=array(a=>"india",b=>"pak"); ksort($sum); print_r($sum); ?>

Output
Array(a=>india
b=>pak)

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in_array() in php

in_array() function searched an array for a specific value.This function returns TRUE if the value is found in the array or FALSE otherwise.
syntax
in_array(search,array,type)

<?php $sum=array("india","pak"); if(in_array("india",$sum) { echo"Match Found" } echo"Not found"; } ?>

Output
Match Found

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count() in php

count() function counts the element of an array,of the properties or two properties of an array.
Syntax
count(array1,array2)
Example

<?php $sum=array("india","pak"); // count the elements of an array echo count($sum); ?>

Output
2

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array_push() in php

array_push() function inserts one or more element to the end of an array
syntax
array_push(array,val1,val2,...)

<?php $sum=array("india","pak"); array_push($arr,"usa","uk"); print_r($sum); ?>

Output
Array([0]=>india
[1]=>pak
[2]=>usa
[3]=>uk)

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