PHP | Ds\Sequence find() Function

The Ds\Sequence::find() function is an inbuilt function in PHP which is used to find the value from the sequence. If the value present in the sequence then return its index value otherwise return false.

Syntax:

mixed abstract public Ds\Sequence::find ( mixed $value ) 

Parameter: This function accepts single parameter $value which need to check that it present in the sequence or not.

Return value: This function returns the index of value on success or False on failure.

Below programs illustrate the Ds\Sequence::find() function in PHP:

Program 1:

<?php

// Create new sequence
$seq =  new \Ds\Vector([21, 23, "p", "x"]);

// Use find() function
var_dump($seq->find("G"));

// Use find() function
var_dump($seq->find(21));

// Use find() function
var_dump($seq->find(10));

// Use find() function
var_dump($seq->find("x"));

// Use find() function
var_dump($seq->find("p"));

?>

Output:

bool(false)
int(0)
bool(false)
int(3)
int(2)

Program 2:

<?php

// Create new sequence
$seq =  new \Ds\Vector(["G", "E", "E",
        "K", "S", "1", "2", 1, 2, 3, 4]);

// Use find() function
var_dump($seq->find("G"));

// Use find() function
var_dump($seq->find(1));

// Use find() function
var_dump($seq->find(10));

// Use find() function
var_dump($seq->find("1"));

// Use find() function
var_dump($seq->find("k"));

// Use find() function
var_dump($seq->find("F"));

// Use find() function
var_dump($seq->find("4"));

?>

Output:

int(0)
int(7)
bool(false)
int(5)
bool(false)
bool(false)
bool(false)

Reference: http://php.net/manual/en/ds-sequence.find.php