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<?php $strings=['12jan','12 jan','12 jan','12/jan','12//jan','12/jan','12*/jan','12*//jan']; foreach($strings as $string){ var_export(preg_split('~(?<=[0-9])[*/ ]*(?=[a-z]+)~i',$string)); echo "\n"; var_export(preg_split('~\d+\K[*/ ]*~',$string)); echo "\n"; var_export(preg_match('~(\d+)[/* ]*([a-z]+)~i',$string,$out)?array_slice($out,1):'fail'); echo "\n"; var_export(preg_match('~(\d+)[/* ]*(.+)~',$string,$out)?array_slice($out,1):'fail'); echo "\n"; var_export(preg_match_all('~\d+|[a-z]+~i',$string,$out)?$out[0]:'fail'); echo "\n---\n"; }
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) --- array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) --- array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) --- array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) --- array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) --- array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) --- array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) --- array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) array ( 0 => '12', 1 => 'jan', ) ---

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