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<?php $a = [ 'sss4444dfdf', //лишние '444444', //много 'sdfsdf', //все не то '', // '4', //мало ]; print_r(preg_filter('/^\D*(\d{2,4}).*$/', '$1', $a[$i++])); print_r(preg_filter('/^\D*(\d{2,4}).*$/', '$1', $a[$i++])); print_r(preg_filter('/^\D*(\d{2,4}).*$/', '$1', $a[$i++])); print_r(preg_filter('/^\D*(\d{2,4}).*$/', '$1', $a[$i++])); print_r(preg_filter('/^\D*(\d{2,4}).*$/', '$1', $a[$i++]));
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $i in /in/VDLYC on line 9 Warning: Undefined array key "" in /in/VDLYC on line 9 Deprecated: preg_filter(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /in/VDLYC on line 9 4444

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