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<?php function repl0($m) { return '&#'.$m[0]; } $s = 'This is a good 23200; sample ship'; echo "input1= ".htmlentities($s)."<br>"; $out1=preg_replace_callback('/(?<!#)(\d{4,5};)/','repl0',$s); echo 'output1 = '.htmlentities($out1).'<br>';
Output for git.master, git.master_jit, rfc.property-hooks
input1= This is a good 23200; sample ship<br>output1 = This is a good &amp;#23200; sample ship<br>

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