3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $numeric_fails = 0; $non_numeric_fails = 0; $iterations = 1000; for ($i = 0; $i < $iterations; $i++) { $my_key = uniqid("\x00"); $var = array(); $var[$my_key] = TRUE; foreach ($var as $key => $val) { if ($key === $my_key) { } else { if (is_numeric($my_key)) { $numeric_fails++; } else { $non_numeric_fails++; } } } } print "Numeric key fails: $numeric_fails".PHP_EOL; print "Non-Numeric key fails: $non_numeric_fails".PHP_EOL; print "Total fails: ".($numeric_fails + $non_numeric_fails).PHP_EOL;
based on mnqgm
Output for 5.5.4, 5.6.8, 7.1.0
Numeric key fails: 153 Non-Numeric key fails: 0 Total fails: 153
Output for 5.1.4, 5.2.2, 5.4.7, 5.4.40, 5.4.43 - 5.4.44, 5.5.28, 5.5.37, 7.0.14
Numeric key fails: 158 Non-Numeric key fails: 0 Total fails: 158
Output for 4.4.1, 5.2.3, 5.2.13, 5.3.11, 5.3.15, 5.4.11, 5.4.17, 5.6.20, 7.0.11
Numeric key fails: 169 Non-Numeric key fails: 0 Total fails: 169
Output for 4.3.10, 4.4.2, 5.2.8, 5.2.17, 5.4.45, 5.6.5, 7.0.10
Numeric key fails: 171 Non-Numeric key fails: 0 Total fails: 171
Output for 4.4.5, 5.4.13, 7.0.9
Numeric key fails: 176 Non-Numeric key fails: 0 Total fails: 176
Output for 5.5.31, 7.0.8
Numeric key fails: 150 Non-Numeric key fails: 0 Total fails: 150
Output for 7.0.7
Numeric key fails: 174 Non-Numeric key fails: 0 Total fails: 174
Output for 5.1.2, 5.1.6, 5.3.23, 5.3.26, 5.3.29, 5.4.34, 5.4.37, 5.5.23, 7.0.6
Numeric key fails: 162 Non-Numeric key fails: 0 Total fails: 162
Output for 5.1.5, 5.2.11, 5.2.14, 5.3.9, 5.3.18, 5.4.22 - 5.4.23, 5.4.28, 5.4.38 - 5.4.39, 5.6.14, 7.0.3, 7.0.5
Numeric key fails: 159 Non-Numeric key fails: 0 Total fails: 159
Output for 5.2.15 - 5.2.16, 5.3.0 - 5.3.1, 5.3.5 - 5.3.6, 5.3.12, 5.5.0, 5.5.14 - 5.5.15, 5.5.35, 7.0.4
Numeric key fails: 160 Non-Numeric key fails: 0 Total fails: 160
Output for 4.4.6, 5.2.6, 5.4.9, 5.6.22, 7.0.2
Numeric key fails: 173 Non-Numeric key fails: 0 Total fails: 173
Output for 5.5.7, 5.5.20, 5.6.15, 7.0.1
Numeric key fails: 147 Non-Numeric key fails: 0 Total fails: 147
Output for 5.4.1, 5.4.10, 5.4.26, 5.4.30, 5.5.24, 5.6.26, 7.0.0
Numeric key fails: 166 Non-Numeric key fails: 0 Total fails: 166
Output for 5.2.1, 5.3.4, 5.3.17, 5.3.20, 5.3.24, 5.4.19, 5.4.32, 5.4.42, 5.5.11, 5.5.22, 5.6.12, 5.6.16, hhvm-3.13.2
Numeric key fails: 156 Non-Numeric key fails: 0 Total fails: 156
Output for hhvm-3.12.0
Numeric key fails: 143 Non-Numeric key fails: 0 Total fails: 143
Output for hhvm-3.10.0
Numeric key fails: 121 Non-Numeric key fails: 0 Total fails: 121
Output for 5.2.9, 5.4.2, 5.5.36, 5.6.3, 5.6.28
Numeric key fails: 155 Non-Numeric key fails: 0 Total fails: 155
Output for 5.3.13, 5.4.0, 5.5.6, 5.5.19, 5.5.25, 5.5.29, 5.6.0, 5.6.25
Numeric key fails: 163 Non-Numeric key fails: 0 Total fails: 163
Output for 4.4.9, 5.1.3, 5.3.25, 5.4.35, 5.6.24
Numeric key fails: 170 Non-Numeric key fails: 0 Total fails: 170
Output for 5.6.18, 5.6.23
Numeric key fails: 172 Non-Numeric key fails: 0 Total fails: 172
Output for 5.4.8, 5.5.16, 5.6.13, 5.6.19, 5.6.21
Numeric key fails: 151 Non-Numeric key fails: 0 Total fails: 151
Output for 5.4.15 - 5.4.16, 5.4.18, 5.4.21, 5.5.8, 5.6.17
Numeric key fails: 157 Non-Numeric key fails: 0 Total fails: 157
Output for 5.4.24, 5.4.31, 5.6.11
Numeric key fails: 152 Non-Numeric key fails: 0 Total fails: 152
Output for 5.5.2, 5.6.10
Numeric key fails: 144 Non-Numeric key fails: 0 Total fails: 144
Output for 5.4.5 - 5.4.6, 5.4.12, 5.5.9, 5.5.13, 5.5.18, 5.5.30, 5.5.34, 5.6.6, 5.6.9
Numeric key fails: 154 Non-Numeric key fails: 0 Total fails: 154
Output for 5.0.2, 5.2.12, 5.3.2, 5.3.8, 5.4.14, 5.4.20, 5.5.27, 5.5.32, 5.5.38, 5.6.7
Numeric key fails: 167 Non-Numeric key fails: 0 Total fails: 167
Output for 5.0.4, 5.2.5, 5.4.3, 5.4.25, 5.5.10, 5.5.12, 5.5.26, 5.6.2, 5.6.4
Numeric key fails: 165 Non-Numeric key fails: 0 Total fails: 165
Output for 4.4.7, 5.2.0, 5.2.7, 5.3.3, 5.3.16, 5.3.22, 5.3.28, 5.4.27, 5.4.29, 5.5.5, 5.5.33, 5.6.1
Numeric key fails: 161 Non-Numeric key fails: 0 Total fails: 161
Output for 5.1.0 - 5.1.1, 5.4.4, 5.5.21
Numeric key fails: 175 Non-Numeric key fails: 0 Total fails: 175
Output for 4.4.4, 5.2.10, 5.3.21, 5.5.3
Numeric key fails: 168 Non-Numeric key fails: 0 Total fails: 168
Output for 4.3.11, 4.4.8, 5.2.4, 5.3.7, 5.3.10, 5.3.14, 5.3.19, 5.4.36, 5.5.1
Numeric key fails: 164 Non-Numeric key fails: 0 Total fails: 164
Output for 5.4.41
Numeric key fails: 146 Non-Numeric key fails: 0 Total fails: 146
Output for 5.3.27
Numeric key fails: 141 Non-Numeric key fails: 0 Total fails: 141
Output for 5.0.5
Numeric key fails: 149 Non-Numeric key fails: 0 Total fails: 149
Output for 5.0.3
Numeric key fails: 177 Non-Numeric key fails: 0 Total fails: 177
Output for 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 21 Numeric key fails: 165PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 22 Non-Numeric key fails: 0PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 23 Total fails: 165PHP_EOL
Output for 5.0.0
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 21 Numeric key fails: 168PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 22 Non-Numeric key fails: 0PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 23 Total fails: 168PHP_EOL
Output for 4.4.3
Numeric key fails: 188 Non-Numeric key fails: 0 Total fails: 188
Output for 4.4.0
Numeric key fails: 180 Non-Numeric key fails: 0 Total fails: 180
Output for 4.3.9
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 21 Numeric key fails: 160PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 22 Non-Numeric key fails: 0PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 23 Total fails: 160PHP_EOL
Output for 4.3.3, 4.3.5, 4.3.8
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 21 Numeric key fails: 174PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 22 Non-Numeric key fails: 0PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 23 Total fails: 174PHP_EOL
Output for 4.3.0, 4.3.7
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 21 Numeric key fails: 167PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 22 Non-Numeric key fails: 0PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 23 Total fails: 167PHP_EOL
Output for 4.3.6
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 21 Numeric key fails: 166PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 22 Non-Numeric key fails: 0PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 23 Total fails: 166PHP_EOL
Output for 4.3.4
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 21 Numeric key fails: 177PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 22 Non-Numeric key fails: 0PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 23 Total fails: 177PHP_EOL
Output for 4.3.2
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 21 Numeric key fails: 185PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 22 Non-Numeric key fails: 0PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 23 Total fails: 185PHP_EOL
Output for 4.3.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 21 Numeric key fails: 182PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 22 Non-Numeric key fails: 0PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/RGnSt on line 23 Total fails: 182PHP_EOL