How to slice a string in PHP?

Ok, so I've got this string:

"MICROSOFT CORP CIK#: 0000789019 (see all company filings)"

And I would like to cut off everything after the "CORP" bit. How would I go about doing th开发者_如何学运维is in PHP? I am used to Python so I am not sure how this is done.

To be clear, this is the output I want:

"MICROSOFT CORP"

I am trying:

$companyname = substr($companyname, 0, strpos($companyname, " CIK"));

and I am getting nothing showing.

Here is my full code:

<?php
include 'simple_html_dom.php';
$html = file_get_html('http://www.sec.gov/cgi-bin/browse-edgar?company=&match=&CIK=MSFT&filenum=&State=&Country=&SIC=&owner=exclude&Find=Find+Companies&action=getcompany');
$companyname = $html->find('span[class=companyName]', 0);
$companyname = substr($companyname, 0, strpos($companyname, " CIK#")+5);
$bizadd = $html->find('div[class="mailer"]');
echo $companyname;
echo "<br />";
foreach ($bizadd as $value) {
    $addvals = $value->find('span[class="mailerAddress"]');
    echo "<br />";
    foreach ($addvals as $value) {
        echo $value;
        echo "<br />";
    }
}
?>

You can either use explode() (http://php.net/explode) or a mix of substr() (http://php.net/substr) with strpos() (http://php.net/strpos).

<?php
$string = "MICROSOFT CORP CIK#: 0000789019 (see all company filings)";
$newString = substr($string, 0, strpos($string, " CIK#"));
echo $newString;

Edit: edited a few times to fit your question editing...

You 'd find the position of "CORP" with strpos (be sure to read the giant red warning) and then cut off the relevant part with substr.

I came to this page looking for a slice slice($start, $end) method, but only found case-specific solutions.

In my case, I only have indexes (start and end). The need for a length to slice a string seemed silly. So I wrote a slice function. It mimics JavaScript's slice method.

// str_slice(string $str, int $start [, int $end])
function str_slice() {
    $args = func_get_args();
    switch (count($args)) {
        case 1:
            return $args[0];
        case 2:
            $str        = $args[0];
            $str_length = strlen($str);
            $start      = $args[1];
            if ($start < 0) {
                if ($start >= - $str_length) {
                    $start = $str_length - abs($start);
                } else {
                    $start = 0;
                }
            }
            else if ($start >= $str_length) {
                $start = $str_length;
            }
            $length = $str_length - $start;
            return substr($str, $start, $length);
        case 3:
            $str        = $args[0];
            $str_length = strlen($str);
            $start      = $args[1];
            $end        = $args[2];
            if ($start >= $str_length) {
                return "";
            }
            if ($start < 0) {
                if ($start < - $str_length) {
                    $start = 0;
                } else {
                    $start = $str_length - abs($start);
                }
            }
            if ($end <= $start) {
                return "";
            }
            if ($end > $str_length) {
                $end = $str_length;
            }
            $length = $end - $start;
            return substr($str, $start, $length);
    }
    return null;
}


var_dump( str_slice("abcdefghijklmnopqrstuvwxyz")          ); // "abcdefghijklmnopqrstuvwxyz"
var_dump( str_slice("abcdefghijklmnopqrstuvwxyz", 5)       ); // "fghijklmnopqrstuvwxyz"
var_dump( str_slice("abcdefghijklmnopqrstuvwxyz", -5)      ); // "vwxyz"
var_dump( str_slice("abcdefghijklmnopqrstuvwxyz", 40)      ); // ""
var_dump( str_slice("abcdefghijklmnopqrstuvwxyz", -40)     ); // "abcdefghijklmnopqrstuvwxyz"
var_dump( str_slice("abcdefghijklmnopqrstuvwxyz", 5, 10)   ); // "fghij"
var_dump( str_slice("abcdefghijklmnopqrstuvwxyz", 5, 20)   ); // "fghijklmnopqrst"
var_dump( str_slice("abcdefghijklmnopqrstuvwxyz", 5, 30)   ); // "fghijklmnopqrstuvwxyz"
var_dump( str_slice("abcdefghijklmnopqrstuvwxyz", -20, 2)  ); // ""
var_dump( str_slice("abcdefghijklmnopqrstuvwxyz", -20, 10) ); // "ghij"
var_dump( str_slice("abcdefghijklmnopqrstuvwxyz", -20, 15) ); // "ghijklmno"
var_dump( str_slice("abcdefghijklmnopqrstuvwxyz", -20, 40) ); // "ghijklmnopqrstuvwxyz"

Assuming your string is stored in $a, then any of

echo substr($a, 0, strpos($a, " CIK"));

or

preg_match("/(.*) CIK/", $a, $matches);
echo $matches[1];

or

echo preg_replace("/(.*) CIK.*/", "$1", $a);

will do.