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  1. <?php
  2.  
  3. function camelToUS($string, $us = "-") {
  4.     return strtolower(preg_replace(
  5.     	'/(?<=\d)(?=[A-Za-z])|(?<=[A-Za-z])(?=\d)|(?<=[a-z])(?=[A-Z])/', $us, $string));
  6. }
  7.  
  8. $test_values = [
  9.     'foo'       => 'foo',
  10.     'fooBar'    => 'foo-bar',
  11.     'foo123'    => 'foo-123',
  12.     '123Foo'    => '123-foo',
  13.     'fooBar123' => 'foo-bar-123',
  14.     'foo123Bar' => 'foo-123-bar',
  15.     '123FooBar' => '123-foo-bar',
  16.     '123FOOBar' => '123-foo-bar',
  17.     '123FooBAR' => '123-foo-bar',
  18.     'FooBAR123' => 'foo-bar-123',
  19.     'FOOBar123' => 'foo-bar-123',
  20. ];
  21.  
  22. foreach ( $test_values as $key => $val ) {
  23.    echo "$key: " . camelToUS($key) .  " => " . (camelToUS($key) == $val) . "\n";
  24. }
  25.  
  26. ?>
Success #stdin #stdout 0.03s 26080KB
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stdin
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Standard input is empty
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foo: foo => 1
fooBar: foo-bar => 1
foo123: foo-123 => 1
123Foo: 123-foo => 1
fooBar123: foo-bar-123 => 1
foo123Bar: foo-123-bar => 1
123FooBar: 123-foo-bar => 1
123FOOBar: 123-foobar => 
123FooBAR: 123-foo-bar => 1
FooBAR123: foo-bar-123 => 1
FOOBar123: foobar-123 =>
https://ideone.com/ZawqG5
language:
PHP (php 7.3.5)
created:
2 days ago
visibility:
public

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