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strrpos in PHP |
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(PHP 4, PHP 5)
strrpos — Find position of last occurrence of a char in a string Description int strrpos ( string $haystack, string $needle [, int $offset] ) Returns the numeric position of the last occurrence of needle in the haystack string. Note that the needle in this case can only be a single character in PHP 4. If a string is passed as the needle, then only the first character of that string will be used. If needle is not found, returns FALSE. It is easy to mistake the return values for "character found at position 0" and "character not found". Here's how to detect the difference: <?php // in PHP 4.0.0 and newer: $pos = strrpos($mystring, "b"); if ($pos === false) { // note: three equal signs // not found... } // in versions older than 4.0.0: $pos = strrpos($mystring, "b"); if (is_bool($pos) && !$pos) { // not found... } ?> If needle is not a string, it is converted to an integer and applied as the ordinal value of a character. Note: As of PHP 5.0.0 offset may be specified to begin searching an arbitrary number of characters into the string. Negative values will stop searching at an arbitrary point prior to the end of the string. Note: The needle may be a string of more than one character as of PHP 5.0.0. Doing for this function is string Add by Pancho You can edit it here |
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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 ...
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