Online PHP editor | output for ktTvQ

@ 2014-10-13T13:20:02Z

<?php

function foo1($string, $with)
{
if (!$bytes = strlen($with)) {
return true;
}
// Warning check, see http://php.net/manual/en/function.substr-compare.php#refsect1-function.substr-compare-returnvalues
if (strlen($string) < $bytes) {
return false;
}
return substr_compare($string, $with, -$bytes);
}

function foo2($string, $with)
{
if (!$bytes = strlen($with)) {
return true;
}
// Warning check, see http://php.net/manual/en/function.substr-compare.php#refsect1-function.substr-compare-returnvalues
if (strlen($string) < $bytes) {
return false;
}
return substr_compare($string, $with, -$bytes, $bytes);
}

var_dump(foo1('a', 'a'));
var_dump(foo2('a', 'a'));
var_dump(foo1('', ''));
var_dump(foo2('', ''));
var_dump(foo1('a', ''));
var_dump(foo2('a', ''));
var_dump(foo1('', 'a'));
var_dump(foo2('', 'a'));

Output for 5.1.0 - 5.1.2, 5.1.5 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: int(0) int(0) bool(true) bool(true) bool(true) bool(true) bool(false) bool(false)
Output for 5.1.3 - 5.1.4: int(0) Warning: substr_compare(): The start position cannot exceed initial string length in /in/ktTvQ on line 24 bool(false) bool(true) bool(true) bool(true) bool(true) bool(false) bool(false)
Output for 5.0.0 - 5.0.5: int(-97) int(-97) bool(true) bool(true) bool(true) bool(true) bool(false) bool(false)
Output for 4.4.5 - 4.4.9: Fatal error: Call to undefined function: substr_compare() in /in/ktTvQ on line 12
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4: Fatal error: Call to undefined function: substr_compare() in /in/ktTvQ on line 12
Process exited with code 255.
Output for 4.3.0 - 4.3.1: Fatal error: Call to undefined function: substr_compare() in /in/ktTvQ on line 12

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