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@ 2018-02-15T12:36:15Z

<?php
$tests=[
    "207.142.131.005",
    "2001:0db8:0000:08d3:0000:8a2e:0070:7344",
    "2001:0db8:0000:08d3:0000:8a2e:0070:734a",
    "207.142.131.5",
    "2001:0db8::8d3::8a2e:7:7344",
    "::1",
    "127.0.0.1"
];

$tests=preg_replace(['/\.\d*$/','/[\da-f]*:[\da-f]*$/'],['.XXX','XXXX:XXXX'],$tests);

var_export($tests);

Output
Performance
VLD
References
Branches

var_export: documentation ( source)
preg_replace: documentation ( source)

preferences:dark modelive preview

56.92 ms | 402 KiB | 5 Q