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(PHP 4, PHP 5)
strspn — Find length of initial segment matching mask
Description
int strspn ( string $str1, string $str2 [, int $start [, int $length]] )
Returns the length of the initial segment of str1 which consists entirely of characters in str2.
The line of code:
<?php
$var = strspn("42 is the answer, what is the question ...", "1234567890");
?>
will assign 2 to $var, because the string "42" will be the longest segment containing characters from "1234567890".
As of PHP 4.3.0, strspn() accepts two optional integer parameters that can be used to define the start position and the length of the string to examine.
<?php
echo strspn("foo", "o", 1, 2); // 2
?>
Note: This function is binary-safe.
Doing for this function is string
Add by Pancho
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Revisiting Chicxulub
For decades, scientists have accumulated ever-larger datasets that suggest an enormous space rock crashed into the ocean off the Yucatan Peninsula more than 65 million years ago, resulting in the Cretaceous-Paleogene (K-Pg) extinction. Recent research, supported in part by the National Science Foundation (NSF), suggested that the impact could have occurred 300,000 years prior to the K-Pg extinction, and that another cause--perhaps a second impact, or the long-lasting volcanic activity ...
More at http://www.nsf.gov/news/news_summ.jsp?cntn_id=116480&WT.mc_id=USNSF_51&WT.mc_ev=click
This is an NSF News item.
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