Online PHP editor | perf for idoX2

<?php function BinSearch($needle, $haystack) { $m = ceil(count($haystack) / 2); $z = $haystack[$m]; if ($needle == $haystack[$m]) { return "Found at index: $haystack[$needle]"; $upper = array_slice($haystack, -$m, count($haystack)); return BinSearch($needle, $upper); } else if ($needle < $haystack[$m]) { $lower = array_slice($haystack, 0, $m); return BinSearch($needle, $lower); } } $countries = array("Afghanistan", "Aland Islands", "Albania", "Algeria", "American Samoa", "Andorra", "Angola", "Anguilla", "Antarctica", "Antigua", "Argentina", "Armenia", "Aruba", "Australia", "Austria", "Azerbaijan", "Bahamas", "Bahrain", "Bangladesh", "Barbados", "Barbuda", "Belarus", "Belgium", "Belize", "Benin", "Bermuda", "Bhutan", "Bolivia", "Bosnia", "Botswana", "Bouvet Island", "Brazil", "British Indian Ocean Trty.", "Brunei Darussalam", "Bulgaria", "Burkina Faso", "Burundi", "Caicos Islands", "Cambodia", "Cameroon", "Canada", "Cape Verde", "Cayman Islands", "Central African Republic", "Chad", "Chile", "China", "Christmas Island", "Cocos (Keeling) Islands", "Colombia", "Comoros", "Congo", "Congo, Democratic Republic of the", "Cook Islands", "Costa Rica", "Cote d'Ivoire", "Croatia", "Cuba", "Cyprus", "Czech Republic", "Denmark", "Djibouti", "Dominica", "Dominican Republic", "Ecuador", "Egypt", "El Salvador", "Equatorial Guinea", "Eritrea", "Estonia", "Ethiopia", "Falkland Islands (Malvinas)", "Faroe Islands", "Fiji", "Finland", "France", "French Guiana", "French Polynesia", "French Southern Territories", "Futuna Islands", "Gabon", "Gambia", "Georgia", "Germany", "Ghana", "Gibraltar", "Greece", "Greenland", "Grenada", "Guadeloupe", "Guam", "Guatemala", "Guernsey", "Guinea", "Guinea-Bissau", "Guyana", "Haiti", "Heard", "Herzegovina", "Holy See", "Honduras", "Hong Kong", "Hungary", "Iceland", "India", "Indonesia", "Iran (Islamic Republic of)", "Iraq", "Ireland", "Isle of Man", "Israel", "Italy", "Jamaica", "Jan Mayen Islands", "Japan", "Jersey", "Jordan", "Kazakhstan", "Kenya", "Kiribati", "Korea", "Korea (Democratic)", "Kuwait", "Kyrgyzstan", "Lao", "Latvia", "Lebanon", "Lesotho", "Liberia", "Libyan Arab Jamahiriya", "Liechtenstein", "Lithuania", "Luxembourg", "Macao", "Macedonia", "Madagascar", "Malawi", "Malaysia", "Maldives", "Mali", "Malta", "Marshall Islands", "Martinique", "Mauritania", "Mauritius", "Mayotte", "McDonald Islands", "Mexico", "Micronesia", "Miquelon", "Moldova", "Monaco", "Mongolia", "Montenegro", "Montserrat", "Morocco", "Mozambique", "Myanmar", "Namibia", "Nauru", "Nepal", "Netherlands", "Netherlands Antilles", "Nevis", "New Caledonia", "New Zealand", "Nicaragua", "Niger", "Nigeria", "Niue", "Norfolk Island", "Northern Mariana Islands", "Norway", "Oman", "Pakistan", "Palau", "Palestinian Territory, Occupied", "Panama", "Papua New Guinea", "Paraguay", "Peru", "Philippines", "Pitcairn", "Poland", "Portugal", "Principe", "Puerto Rico", "Qatar", "Reunion", "Romania", "Russian Federation", "Rwanda", "Saint Barthelemy", "Saint Helena", "Saint Kitts", "Saint Lucia", "Saint Martin (French part)", "Saint Pierre", "Saint Vincent", "Samoa", "San Marino", "Sao Tome", "Saudi Arabia", "Senegal", "Serbia", "Seychelles", "Sierra Leone", "Singapore", "Slovakia", "Slovenia", "Solomon Islands", "Somalia", "South Africa", "South Georgia", "South Sandwich Islands", "Spain", "Sri Lanka", "Sudan", "Suriname", "Svalbard", "Swaziland", "Sweden", "Switzerland", "Syrian Arab Republic", "Taiwan", "Tajikistan", "Tanzania", "Thailand", "The Grenadines", "Timor-Leste", "Tobago", "Togo", "Tokelau", "Tonga", "Trinidad", "Tunisia", "Turkey", "Turkmenistan", "Turks Islands", "Tuvalu", "Uganda", "Ukraine", "United Arab Emirates", "United Kingdom", "United States", "Uruguay", "US Minor Outlying Islands", "Uzbekistan", "Vanuatu", "Vatican City State", "Venezuela", "Vietnam", "Virgin Islands (British)", "Virgin Islands (US)", "Wallis", "Western Sahara", "Yemen", "Zambia", "Zimbabwe"); $country = "Pakistan"; $time_start = microtime(true); echo BinSearch($country, $countries) . PHP_EOL; echo 'Total execution time in seconds: ' . number_format(microtime(true) - $time_start, 20) . PHP_EOL; $time_start = microtime(true); array_search($country, $countries); echo 'Total execution time in seconds: ' . number_format(microtime(true) - $time_start, 20) . PHP_EOL;

Version	System time (s)	User time (s)	Memory (MiB)
7.4.1	0.012	0.012	14.95
7.4.0	0.006	0.009	14.82
7.3.13	0.008	0.011	14.57
7.3.12	0.007	0.007	15.06
7.3.11	0.013	0.008	15.01
7.3.10	0.018	0.000	14.98
7.3.9	0.007	0.010	14.79
7.3.8	0.010	0.003	15.09
7.3.7	0.004	0.007	14.70
7.3.6	0.003	0.006	14.81
7.3.5	0.007	0.007	14.76
7.3.4	0.007	0.013	14.81
7.3.3	0.011	0.008	14.82
7.3.2	0.008	0.005	15.74
7.3.1	0.011	0.010	15.95
7.3.0	0.010	0.008	15.59
7.2.26	0.007	0.014	15.34
7.2.25	0.006	0.012	15.16
7.2.24	0.008	0.008	15.38
7.2.23	0.007	0.011	15.42
7.2.22	0.009	0.006	15.02
7.2.21	0.012	0.006	15.09
7.2.20	0.008	0.008	15.21
7.2.19	0.000	0.015	15.16
7.2.18	0.010	0.010	14.97
7.2.17	0.005	0.008	14.99
7.2.16	0.007	0.009	14.94
7.2.15	0.010	0.012	16.17
7.2.14	0.014	0.011	15.99
7.2.13	0.003	0.013	16.00
7.2.12	0.013	0.003	16.15
7.2.11	0.006	0.012	15.91
7.2.10	0.010	0.009	16.06
7.2.9	0.008	0.010	15.85
7.2.8	0.014	0.007	15.99
7.2.7	0.008	0.006	16.19
7.2.6	0.008	0.010	16.01
7.2.5	0.014	0.008	16.11
7.2.4	0.016	0.003	15.98
7.2.3	0.013	0.008	16.20
7.2.2	0.011	0.007	15.96
7.2.1	0.010	0.010	15.87
7.2.0	0.007	0.009	15.96
7.1.33	0.004	0.015	15.83
7.1.32	0.009	0.006	15.75
7.1.31	0.009	0.006	15.94
7.1.30	0.007	0.010	15.84
7.1.29	0.000	0.016	15.83
7.1.28	0.008	0.012	14.88
7.1.27	0.013	0.005	14.86
7.1.26	0.009	0.013	14.87
7.1.25	0.015	0.008	14.93
7.1.24	0.006	0.008	15.84
7.1.23	0.007	0.007	15.83
7.1.22	0.000	0.011	15.75
7.1.21	0.000	0.017	15.62
7.1.20	0.004	0.008	15.70
7.1.19	0.009	0.003	15.71
7.1.18	0.003	0.010	15.95
7.1.17	0.007	0.010	15.98
7.1.16	0.011	0.000	15.77
7.1.15	0.004	0.009	15.76
7.1.14	0.004	0.008	15.91
7.1.13	0.007	0.007	15.71
7.1.12	0.003	0.010	15.45
7.1.11	0.003	0.007	15.93
7.1.10	0.004	0.007	15.95
7.1.9	0.004	0.011	15.98
7.1.8	0.004	0.011	15.55
7.1.7	0.006	0.006	15.70
7.1.6	0.003	0.010	15.86
7.1.5	0.006	0.003	15.80
7.1.4	0.007	0.004	15.89
7.1.3	0.008	0.004	15.83
7.1.2	0.006	0.008	15.96
7.1.1	0.009	0.006	15.68
7.1.0	0.008	0.006	16.00