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<?php $string = "resource_id_heeelp_lala_klopsiki"; preg_match_all('/(_[\w]{1})/', $string, $matches); if(!empty($matches[0])){ foreach($matches[0] as $key){ $result = substr($key, 0, 1); //result is c $result1=str_replace($result,'',$key);//now your result1 is apitalize $result2=ucfirst($result1); //now result2 is Apitalize $finalresult=$result.$result2; ///now your finalresult is cApitalize preg_replace($key, $finalresult, $string); } } print $string;
Output for git.master, git.master_jit, rfc.property-hooks
Warning: preg_replace(): No ending delimiter '_' found in /in/qTF7R on line 12 Warning: preg_replace(): No ending delimiter '_' found in /in/qTF7R on line 12 Warning: preg_replace(): No ending delimiter '_' found in /in/qTF7R on line 12 Warning: preg_replace(): No ending delimiter '_' found in /in/qTF7R on line 12 resource_id_heeelp_lala_klopsiki

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