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<?php $search = preg_quote('test'); $pattern = '#([^ ]+ )?'.$search.'( [^ ]+)?#'; $res = preg_match_all($pattern,'write your test data here',$regs); var_dump($regs); $res = preg_match_all($pattern,'test data here',$regs); var_dump($regs); $res = preg_match_all($pattern,'write your test',$regs); var_dump($regs); $res = preg_match_all($pattern,'not found at all',$regs); var_dump($regs); $res = preg_match_all($pattern,'write your test data found more than once test here ',$regs); var_dump($regs);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> array(1) { [0]=> string(14) "your test data" } [1]=> array(1) { [0]=> string(5) "your " } [2]=> array(1) { [0]=> string(5) " data" } } array(3) { [0]=> array(1) { [0]=> string(9) "test data" } [1]=> array(1) { [0]=> string(0) "" } [2]=> array(1) { [0]=> string(5) " data" } } array(3) { [0]=> array(1) { [0]=> string(9) "your test" } [1]=> array(1) { [0]=> string(5) "your " } [2]=> array(1) { [0]=> string(0) "" } } array(3) { [0]=> array(0) { } [1]=> array(0) { } [2]=> array(0) { } } array(3) { [0]=> array(2) { [0]=> string(14) "your test data" [1]=> string(14) "once test here" } [1]=> array(2) { [0]=> string(5) "your " [1]=> string(5) "once " } [2]=> array(2) { [0]=> string(5) " data" [1]=> string(5) " here" } }

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