$endsWith = substr( $str, -strlen( $test ) ) == $test

substr_compare($str, $test, strlen($str)-strlen($test), strlen($test)) === 0;

function endswith($string, $test) {
    $strlen = strlen($string);
    $testlen = strlen($test);
    if ($testlen > $strlen) return false;
    return substr_compare($string, $test, $strlen - $testlen, $testlen) === 0;
}

stripos(strrev($haystack), $reversed_needle) === 0;

function stringEndsWith($whole, $end)
{
    return (strpos($whole, $end, strlen($whole) - strlen($end)) !== false);
}

strrpos($str, $test) == strlen($str) - strlen($test)

$content = "The main string to search";
$search = "search";
//For compare the begining string with case insensitive.
if(stripos($content, $search) === 0) echo 'Yes';
else echo 'No';

//For compare the begining string with case sensitive.
if(strpos($content, $search) === 0) echo 'Yes';
else echo 'No';

//For compare the ending string with case insensitive.
if(stripos(strrev($content), strrev($search)) === 0) echo 'Yes';
else echo 'No';

//For compare the ending string with case sensitive.
if(strpos(strrev($content), strrev($search)) === 0) echo 'Yes';
else echo 'No';