- explode: documentation ( source)
<?php
$name = "IPC_IPCamera_13_7_24_9_57_45.jpg";
$parts = explode("_", $name);
for ($i = 0; $i < count($parts); $i++) {
$part = $parts[$i];
if (strlen($part) == 1) {
$part = "0" . $part;
}
$newName .= $part . "_";
}
echo $newName;