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<?php function is_intstr($val, $negative=false) { return preg_match("/^".($negative?"-?":"")."(0|[1-9][0-9])*$", $val); } foreach(range(0, 10) as $n) { print_r(is_intstr($n)); }
Output for git.master, git.master_jit, rfc.property-hooks
Warning: preg_match(): No ending delimiter '/' found in /in/CjHO6 on line 4 Warning: preg_match(): No ending delimiter '/' found in /in/CjHO6 on line 4 Warning: preg_match(): No ending delimiter '/' found in /in/CjHO6 on line 4 Warning: preg_match(): No ending delimiter '/' found in /in/CjHO6 on line 4 Warning: preg_match(): No ending delimiter '/' found in /in/CjHO6 on line 4 Warning: preg_match(): No ending delimiter '/' found in /in/CjHO6 on line 4 Warning: preg_match(): No ending delimiter '/' found in /in/CjHO6 on line 4 Warning: preg_match(): No ending delimiter '/' found in /in/CjHO6 on line 4 Warning: preg_match(): No ending delimiter '/' found in /in/CjHO6 on line 4 Warning: preg_match(): No ending delimiter '/' found in /in/CjHO6 on line 4 Warning: preg_match(): No ending delimiter '/' found in /in/CjHO6 on line 4

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