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run code in 150+ php & hhvm versions
Bugs & Features
<?php $strings = [ '100010' => '110', '010200' => '1200', '01110' => '1110', ]; foreach ($strings as $subject => $expected) { $actual = preg_replace('/0+(?!^)/', '', $string); printf(" %s -> %s (expected: %s)\n", $subject, $actual, $expected); }
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: string in /in/IPl5V on line 11 100010 -> (expected: 110) Notice: Undefined variable: string in /in/IPl5V on line 11 010200 -> (expected: 1200) Notice: Undefined variable: string in /in/IPl5V on line 11 01110 -> (expected: 1110)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/IPl5V on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/IPl5V on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/IPl5V on line 3
Process exited with code 255.