- ctype_alpha: documentation ( source)
- stripos: documentation ( source)
<?php
function getAllWholeWordPos($s,$word){
$b = " ";
$delimited = "$b$word$b";
$retval = false;
for ($i=0, $max = strlen( $s ); $i < $max; $i++) {
if ( !ctype_alpha( $s[$i] ) ){
$s[$i] = $b;
}
}
while ( ( $pos = stripos( $s, $delimited) ) !== false ) {
$retval[] = $pos + 1;
for ( $i=0, $max = $pos + 1 + strlen( $word ); $i <= $max; $i++) {
$s[$i] = $b;
}
}
return $retval;
}
$whole_word = "any";
$str = "Will *$whole_word* company do *$whole_word* job, (are there $whole_word)?";
echo "\nString: \"$str\"";
$result = getAllWholeWordPos( $str, $whole_word );
$times = count( $result );
echo "\n\nThe word \"$whole_word\" occurs $times times:\n";
foreach ($result as $pos) {
echo "\nPosition: ",$pos;
}