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Finding Mulitple Occurences Of A String Withing Another
// Finding mulitple occurences of a string withing another
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function multipleSubstringOccurences($string,$substring)
{
$string=strtolower($string);
$substring=strtolower($substring);
$matched_positions=array();
$sample_string_to_be_matched=$string;
$string_to_be_found=$substring;
$strlen_string_to_be_found=strlen($string_to_be_found);
$matched_positions[]=strpos($sample_string_to_be_matched,$string_to_be_found);
if(strpos($sample_string_to_be_matched,$string_to_be_found))
{
$current_array_index=0;
$cur_pos=strpos($sample_string_to_be_matched,$string_to_be_found)+$strlen_string_to_be_found;
$still_finding=true;
while($still_finding)
{
$sample_string_to_be_matched=substr($sample_string_to_be_matched,$cur_pos,strlen($sample_string_to_be_matched));
if(strpos($sample_string_to_be_matched,$string_to_be_found))
{
$still_finding=true;
$cur_pos=strpos($sample_string_to_be_matched,$string_to_be_found)+$strlen_string_to_be_found;
$matched_positions[]=$matched_positions[$current_array_index]+strpos($sample_string_to_be_matched,$string_to_be_found)+$strlen_string_to_be_found;
$current_array_index++;
}
else
{
$still_finding=false;
}
}
}
else
{
return false;
}
return $matched_positions;
}
//Usage
$string_main="Life is sometimes hard. Sometimes it's delightful.";
$string_to_find="Sometimes";
$res_array=array();
$res_array=multipleSubstringOccurences($string_main,$string_to_find);
/*
Will return an array with all starting indexes of string "sometimes".
*/
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