<?php $eqn1="0.068683000000003x1+2.046124y1+-0.4153z1=0.486977512"; preg_match("/\b[0-9]*\b/",$eqn1,$vx1); echo "x1 is: $vx1[0]"; ?> can tell me, how store value of x1 (that is, 0.068683000000003) in variable $vx1?
the output is:
x1 is: 0
1)put semicolon after each sentences;
2)use echo "x1 is:" $vx1[0]; instead ofecho "x1 is: $vx1[0]";
<?php $eqn1="0.068683000000003x1+2.046124y1+-0.4153z1=0.486977512"; preg_match("/\b[0-9]*\b/",$eqn1,$vx1); echo "x1 is:" .$vx1[0]; 