json string simple filter HTML tags in string

function deleteHtml( $scr )
{
$l = strlen( $scr );

for( $i=0; $i<$l; $i++ )
{
if( substr( $scr, $i, 1 ) == "<" )
{
// Current position
$ii = $i;

// Stop looping when $i is greater than the character length
while( substr( $scr, $i, 1 ) ! = ">" && $i < $l )
$i++;

// When reaching the end of the large string, reset $i to the starting position of '<' if ( $i == $ l )
                                                                                                                                                                         . Accept characters, otherwise $i--, start searching from this '<' if ( substr( $scr, $i, 1 ) != '<' || $b == 1 )
$str = $ str . substr( $scr, $i, 1 );
else
$i--;
}

return( $str );

}

The above introduces the json string and simply filters the HTML tags in the string, including the content of the json string. I hope it will be helpful to friends who are interested in PHP tutorials.