I have an anonymous function that works when called directly. However, when I try to call it from another anonymous function, I get the error
Fatal error: Function name must be a string in ...(fileName)
Here is the complete code. Appreciate any thoughts on why this is failing.
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<?php
$ringW = 16; $ringCx = 8;
$ringH = 16; $ringCy = 8; $ringR = 7;
$penWidth = 2;
$svgCircle = function ($fillColor, $ringColor)
use ($ringW, $ringH, $ringR, $ringCx, $ringCy, $penWidth) {
echo "<svg width=\"$ringW\" height=\"$ringH\">";
echo "<circle cx=\"$ringCx\" cy=\"$ringCy\" r=\"$ringR\" " .
"stroke=\"$ringColor\" stroke-width=\"$penWidth\" fill=\"$fillColor\" />\n";
echo "</svg>\n";
};
$pac = function ($condition) {
if ($condition)
// echo "Hello world\n"; // pass
$svgCircle("yellow", "green"); // fails
};
?>
<head>
<title>LVCC Algorithm</title>
</head>
<body>
<?php
$pac(1);
$svgCircle("yellow", "green"); // pass
$svgCircle("yellow", "green");
?>
</body>
</html>
You forgot to make $svgCircle available to your second function
$pac = function ($condition) use ($svgCircle) {...};
^^^^^^^^^^^^^^^^
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