php - Find white space in string -

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i have following string. need find position of last white space.

i have tried following code:

for ($i = 410; $i < 420; $i++) {             if ($body[$i] == ' ') {                 $lastcharacter = $i;                 break;             }         }

but not return correct white space position. return position in middle of word.

dans cette septième étape, les coureurs vont relier montpellier et albi, passant au milieu des vignes de l'arrière-pays pour faire la jonction entre les alpes et les pyrénées, traversant des paysages qui font toute la saveur du tour. dernière étape un peu plate avant un week-end placé sous le signe de la montagne. des ascensions de col, la foule amassée sur les côtés, souffrant avec leu...

$lastspace = strrpos($string," ");

doc: strrpos


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