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<?php function convert_case($name) { return implode( '_', array_map( 'strtolower', preg_split('/(([A-Z]+)[^A-Z]*)/', $name, null, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY) ) ); } $samples = array( 'FooBar', 'FooBAR', 'FOObar', ); print_r(array_map("convert_case", $samples));
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: preg_split(): Passing null to parameter #3 ($limit) of type int is deprecated in /in/gZ1FL on line 9 Deprecated: preg_split(): Passing null to parameter #3 ($limit) of type int is deprecated in /in/gZ1FL on line 9 Deprecated: preg_split(): Passing null to parameter #3 ($limit) of type int is deprecated in /in/gZ1FL on line 9 Array ( [0] => foo_f_bar_b [1] => foo_f_bar_bar [2] => foobar_foo )

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