PHP two table content how to call one another

How PHP two table content is called from one another
In this good sound, once in Hunan satellite TV "hundred Change Big Café show" as vocal music teacher's Weixeeman will debut. [Img]115[/img] In addition, starting next week, each tutor will take their own dream tutor to participate in the team battle, so the dream mentor candidates become the object of speculation, rumors of a bewildering version. [Img]119[/img] In the last four participants in the week, singer Weixeeman was the biggest student, she was [img]165[/img]

This is the body field in the data sheet news. But the picture is in the PIC table. The number in the middle of [img]165[/img] is the ID of the PIC table, and the image address has an add field after the corresponding ID.
To correctly display this news PHP code should be how to write.
------Solution--------------------

$s =<<< TXT
In this good sound, once in Hunan satellite TV "hundred Change Big Café show" as vocal music teacher's Weixeeman will debut. [Img]115[/img] In addition, starting next week, each tutor will take their own dream tutor to participate in the team battle, so the dream mentor candidates become the object of speculation, rumors of a bewildering version. [Img]119[/img] In the last four participants in the week, singer Weixeeman was the biggest student, she was [img]165[/img]
TXT;
echo preg_replace ('/\[img\] (\d+) \[\/img\]/', ', $s);

In this good sound, once in Hunan satellite TV "hundred Change Big Café show" as vocal music teacher's Weixeeman will debut. In addition, starting next week, each tutor will take their own dream tutor to participate in the team battle, so the dream mentor candidates become the object of speculation, rumors of a bewildering version. Among the four students who last played this week, singer Weixeeman was the biggest student,

------Solution--------------------

$s =<<< TXT
In this good sound, once in Hunan satellite TV "hundred Change Big Café show" as vocal music teacher's Weixeeman will debut. [Img]115[/img] In addition, starting next week, each tutor will take their own dream tutor to participate in the team battle, so the dream mentor candidates become the object of speculation, rumors of a bewildering version. [Img]119[/img] In the last four participants in the week, singer Weixeeman was the biggest student, she was [img]165[/img]
TXT;
$s =preg_replace_callback ('/\[img\] (\d+) \[\/img\]/', function ($r) {
  Return ';
}, $s);
Echo $s;
function Getpicid ($id) {
  Return $id. GIF ';
}

In this good sound, once in Hunan satellite TV "hundred Change Big Café show" as vocal music teacher's Weixeeman will debut. In addition, starting next week, each tutor will take their own dream tutor to participate in the team battle, so the dream mentor candidates become the object of speculation, rumors of a bewildering version. Among the four students who last played this week, singer Weixeeman was the biggest student,

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