Using explode in php to find whether a character exists

The code for using explode in php to find whether a character exists is as follows:

 1) {// here, when the statistical array is greater than 1, it indicates that there is one or more separated symbols "| ". $ Tg1_tjly_tit = $ tg1_tjly [0]; $ tg1_tjly_con = $ tg1_tjly [1];} else {$ tg1_tjly_tit = 'reason for recommendation '; $ tg1_tjly_con =$ _ MODULE [tg1_tjly] ;}} else {$ tg1_tjly_tit = 'Enter the Recommendation reason title'; $ tg1_tjly_con = 'Enter the Recommendation reason content. please enter the Recommendation reason content, enter the reason for recommendation. ';}?>