another data date value null when grab html - php

Question

here's my problem, i tried grab date and change to date format from special character in 2 table. it successful. but 1 table the date return 0000-00-00 00:00:00, another table success. here's code,table and output below.
Table 1
<TABLE class="tab1" border="1" cellpadding="0" cellspacing="0"
summary="">
<TR>
<TH align=left colspan=2 bgcolor=#0066CC><H1> Start RIP Job</H1>
</TH>
</TR>
<TR>
<TH align=left> Send Date:
</TH>
<TD class="td1" align=left> 1/9/2017 1:15 PM
</TD>
</TR>
<TR>
<TH align=left> RIP Start Date and Time:
</TH>
<TD class="td1" align=left> 13:21:22 09/01/2017
</TD>
</TR>
<TR>
<TH align=left> RIP End Date and Time:
</TH>
<TD class="td1" align=left> 13:21:33 09/01/2017
</TD>
</TR>
<TR>
<TH align=left> RIP Duration:
</TH>
<TD class="td1" align=left> 11 seconds
</TD>
</TR>
<TR>
<TH align=left colspan=2 bgcolor=#0066CC><H1> End RIP Job</H1>
</TH>
</TR>
</TABLE>
Table 2
<TABLE class="tab1" border="1" cellpadding="0" cellspacing="0"
summary="">
<TR>
<TH align=left colspan=2 bgcolor=#0066CC><H1> Start RIP Job</H1>
</TH>
</TR>
<TR>
<TH align=left> Printer:
</TH>
<TD class="td1" align=left> RunJiang Flora 3204P
</TD>
</TR>
<TR>
<TH align=left> Send Date:
</TH>
<TD class="td1" align=left> 9/29/2017 10:09 PM
</TD>
</TR>
<TR>
<TH align=left> RIP Start Date and Time:
</TH>
<TD class="td1" align=left> 22:09:49 29/09/2017
</TD>
</TR>
<TR>
<TH align=left> RIP End Date and Time:
</TH>
<TD class="td1" align=left> 22:10:13 29/09/2017
</TD>
</TR>
<TR>
<TH align=left> RIP Duration:
</TH>
<TD class="td1" align=left> 24 seconds
</TD>
</TR>
<TR>
<TH align=left colspan=2 bgcolor=#0066CC><H1> End RIP Job</H1>
</TH>
</TR>
</TABLE>
CODE :
$source=file_get_contents("C://xampp/htdocs/Champion/machine-logs/LogPrinting04/nulldate.HTML");
$dom = new DOMDocument();
$dom->loadHTML($source);
// print_r($dom);
$xp = new DOMXPath($dom);
$textList = $xp->query("//table[//th[contains(text(),'')]]");
foreach ( $textList as $text ) {
$enddate = $xp->evaluate(
"string(descendant::tr[th[contains(text(),'RIP End Date and Time') or contains(text(),'Output End Date And Time')]]/td/text())",
$text);
$date = preg_replace("/[^0-9a-zA-Z \/:\-]/", "", $enddate);
$xtime = strtotime($date);
$tes = date("Y-m-d H:i:s",$xtime);
echo "enddate=".$tes.PHP_EOL;
}
OUTPUT :
table 1 : 2017-09-01 13:21:33
table 2 : 0000-00-00 00:00:00

Answer 1

'29' is not a valid month value.
Look at the one that is returning a value. Notice that it's returning September 1, not January 9.
13:21:33 09/01/2017 -> 2017-09-01 13:21:33
mm dd yyyy yyyy mm dd
Then look at the one that is returning zeros.
22:10:13 29/09/2017
mm dd yyyy
29 is not a valid value for month. (If we're expecting this input to be a representation of September 29, then we're also probably expecting the first one to be a representation of January 1.)