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<!DOCTYPE html> <html> <body> <?php function test1(){ } echo "test1 is callable: " . is_callable("test1"); echo "<br>"; echo "test2 is callable: " . is_callable("test2"); ?> </body> <!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_func_var_is_callable by HTTrack Website Copier/3.x [XR&CO'2014], Tue, 07 Jun 2022 20:30:06 GMT --> </html>
test1 is callable: 1
test2 is callable: